GreaseBook powers the most profitable, operationally efficient producers in the oil patch today.

Introducing Greasebook, the simplest, most cost-effective, fastest-growing oil & gas production software the industry has ever seen....

→ Achieve results in less than 1 week.
→ "No-sweat" company set-up, turn-keyed by a Petroleum Engineer.
→ "Done for you" Pumper roll-out and training.
→ Unprecedented 60-day, 200% money-back guarantee.

•  AS SEEN ON  •               • AS SEEN ON  •               • AS SEEN ON  •               • AS SEEN ON  •            

Water Systems In Gas & Oil Production

It’s common for the fluid pumped from a well to contain some amount of water, particularly in reservoirs that are driven by water pressure. As production volumes grow, and through the life of the well, the volume of water produced will increase. As the proportion of water in the fluid grows, specific vessels for separating water are going to be needed. The water that is separated out can be useful, and the equipment needed for handling it can also have more than one use. Understanding the equipment, other uses for it, and how to handle produced water are all important.

Water Systems

The heater-treater and gun barrel (also known as wash tank) are two common vessels used for separating out water, as well as gas, from the oil. There is also some other, more specialized equipment that can be used.

Water Systems

Figure 1. A diagram of the water disposal system, and the circulating system. Water flow lines are marked W.


Water In The Heater-Treater And Gun Barrel

Both of these vessels use gravity and a few other natural reactions to separate the oil, water, and gas. They don’t require any power, but merely time and a certain amount of liquid pressure to keep the fluid flowing.

Water Systems

Figure 2. A heater-treater, showing inlet and outlet lines, as well as the water leg.

Crude oil enters through the inlet on the upper right side of the vessel in Figure 2. As it does, gas flash separates, meaning that it leaves the water within a relatively short period of time. Oil and water flows through a downcomer line to the bottom of the tank. The gas line is at the very top, then leading to the right, and pipes out natural gas released from the fluid. Oil floats to the top and the heavier water flows out through the drain at the bottom. Cleaned oil, which has had gas and water removed, flows out through the lowest right line, the closest in to the tank.

The water passes through the water leg, which is the small tower to the left. It consists of a larger pipe, a narrower pipe running inside the larger one, and a wider compartment at the top. Water flows from the drain up through the narrower pipe to the larger space at the top. Additional gas separates at this point. A small line runs from the the compartment to the top of the tank, equaling the pressure between the two. Water flows over the top of the smaller pipe, and then down into the outside leg and then to a dump valve.

Raising and lowering the water leg will change the water level inside the tank, also changing the amount of oil held in it. This can have an effect on the efficiency of separation, so while adjustments are sometimes necessary, it’s important to be aware of the consequences of those adjustments.

Both water in the water disposal line and clean oil in the oil flow line are both held to a height of about 4 feet above dump valves. These valves are usually controlled by a weight on a lever arm, which can be adjustable. Adjustments are generally unusual. The valves don’t control the height of the water in the tanks, only what’s held in the out flowing lines. The amount of liquid held in the tanks is controlled by height of the outlet lines on the tank.

Gun barrels operate in generally the same way as heater-treaters, lacking only a firebox to add heat to the separation process. Figure 3 shows an example of a gun barrel, with the emulsion entering an inlet on the left of the flume, the tower beside the tank. Gas breaks out at the top in the large compartment, and the liquid drops below where it enters the gun barrel and is then spread across the bottom. The clean oil flows out through the line near the top left of the tank and is piped to the stock tanks.

Water Systems

Figure 3. Gun barrel with a water leg on the right.

The water leg in this example is actually the thicker pipe attached to the top and right side of the gun barrel tank. Water is drained through the lower tank outlet on the side, and then up a smaller inner tube within the larger visible pipe. It then overflows at the top and is piped to the water disposal tank. The connection at the top is used to equalize pressure and stabilize the water leg. There’s also a support arm extending from the side of the tank and holding the pipe with saddle clamps. Some pipes, particularly plastic or fiberglass, need more support to keep the line stable, which helps prevent leaks.


Circulating Pump And Systems

Once oil reaches the stock tanks, it may need to be circulated back through the heater-treater or other vessels to continue to remove water and sediment. Circulating the fluid can also help to keep the bottoms of tanks clean. The circulating system pumps the oil from the stock tanks and back to the other vessels, which is necessary as the stock tanks are at the end of a gravity fed system.

For smaller operations, the circulating pump will usually be operated manually. As an operation grows and volume increases, that can become impractical and so automation is used. That usually requires some investment in upgraded equipment. However, it is worth it as the amount of time, equipment, and chemicals needed for separating the larger amounts of oil are reduced.

With automation, there is always the possibility that an error or malfunction could lead to a spill. In high volume operations where automation is more common, spills can be large and extremely costly. When using automation, keeping your equipment well maintained is vital.

The circulating pump can also be used to pump fluid for other purposes, including moving water for waterflood operations or disposal. It can be used to empty a vessel for inspection or cleaning, refill empty vessels, and for filling a tank prior to sale. It’s flexibility will depend on the system’s complexity. Some circulating systems are fairly basic and have only a few functions. Others are designed to be able to do more. The circulating system can’t be used for everything, but there are a few problems it is commonly used to solve.


Common Uses Of A Circulating Pump

The most basic problem a circulating system address is a rise in the amount of sediment and water in the oil. That has to be lowered before the oil can be sold, so the oil is circulated back through the separating vessels. As is explained below, care should always be taken that the vessels can handle the additional volume.

Water Systems

Figure 4. You can see the circulating pump in the background of this picture, next to the heater-treater. Also pictured are a stock tank and drain lines.

It’s also helpful to be able to drain any tank using a circulating pump. Tanks and lines will need be maintained and repaired many times in the course of pumping a well. Connecting the circulating pump to a tank’s drain allows you to empty the vessel fairly easily if you need to access the interior. Otherwise, emptying a vessel can be a time wasting pain.

Another common use is also helping to keep the bottoms of tanks clean. A regular circulation of oil through the system can help with this. But you’ll probably have to dedicate some time to cleaning tanks’ bottoms, which may require additional tubing that can be lowered into the tank and some other equipment. The circulating pump can make this operation easier.

A good circulating system should allow you to manage your water pumping and disposal needs while still allowing normal separation operations. The water outlet from those vessel should continue to feed into the water disposal tank, as that’s a gravity feed flow and therefore doesn’t need pumping.

A problem to be aware of when both these operations are underway at the same time is overflow, or build up of one or the other liquids. You’re pumping oil into the tank, so you want to make sure you keep the in and out flows balanced. Otherwise, you may end up pumping too much oil, forcing more water out of the tank than you want, which leads to a drop of separating efficiency. In some cases, you may begin to lose oil down the water disposal line. That sort of loss of balance can be a big problem, and should be addressed immediately.

You can also end up with too much of one kind of fluid for a few other reasons. Some are caused by errors in design, such as water lines that aren’t big enough for the flow or an incorrectly set water leg. Others are errors in operation, such as circulating oil for too long or not allowing the vessels to reach a balance after circulating. Some stem from changes in production, such as lower production, or a change in the weight of the water being pumped.


Water Disposal Tank

Water disposal tanks are usually fiberglass, and have some sort of cover to keep wildlife out. A small operation’s tank will hold one transport load of about 250 barrels of water. These tanks are about 8 feet tall, and may have guy lines or other equipment to keep them stable. Larger operations need greater holding capacity, and may have 20 ft tall tanks capable of containing a couple thousand barrels of water. The tanks will need to be inspected for water level regularly, so some sort of access stairway or ladder is necessary.

Water Systems

Figure 5. The water disposal line from a gun barrel’s water outlet. This flows to the water disposal tank.

Water in the disposal tank can be reused for some purpose in the pumping operation. With those operations, a blanket of oil may be maintained over the water to prevent the water contacting oxygen in the air, which can lead to corrosion.


Water Disposal

Water, if not used elsewhere in the operation, is usually injected back down a well to keep the reservoir’s pressure. For smaller operations, there’s simply a pump that sends water to an injection well (we go into more detail on water injection here: Second Stage Recovery Methods For Oil & Gas Production).

Water Systems

Figure 6. An example control unit for water injection.

If that’s not possible, water may be hauled by truck to an injection well. A single load will be between 160 and 200 barrels. You may have to pay to have this water trucked and disposed of, if you’re not running your own water injection or water flood operation.

Is your appetite for oil & gas operating knowledge insatiable like ours? 😀 If so, check out these related articles below – they’ll be sure to pump you up!!!

How CAN we guarantee you a 6% lift in profit margin in 6 weeks*?

*PLEASE NOTE: 6% is the AVERAGE result of producers who implement the app into their operations..... which means a full HALF of our clients do better 🤑


Send us your Well and Pumper info 📑

Your team sits back while our Petroleum Engineers turn key your build out, setting up all production facilities to precisely mirror what you’ve got going on in the field.

Day 1

Roll out Pumpers 👨🏻‍🦰👴🏻👨🏻👨🏾‍🦱👴🏽🧔🏼‍♂️📲

We train, instruct and hand hold your pumpers every step of the way. Typical time for a pumper to learn the app? 8 minutes.

Week 1

Immediate Results 🎯

  • Your production data in On Time: Because your pumper can enter production on ANY device (Android, Apple, tablet, PC, Mac, Desktop or Laptop) AND the app works offline, you’ve eliminated ANY excuse for you NOT to have your data. PS for better or worse, NOBODY leaves their home without their phone 😉
  • Your production data is Quality Controlled: Because the app checks your pumpers’ work, all your production data should now be QC’d.

Week 6

6% Lift in your Net Profit Margins Achieved or You Don’t Pay 💯💰📈

  • Your production data is in a Centralized Place: Because you have a simple system and everyone in the field knows how to work it, no one on the team ever has to wonder what’s really going on in the field.
  • The pulse and overall health of your company’s production is now known at all times
  • The status of any asset or pumper can be reviewed from any device
    • Because of this, you have now progressed to the point where you may want to set up Alerts around your production. To get you started (and get your creative juices flowing), we’ll implement two alerts on your behalf:
      • Comments
        • Get notified anytime a pumper leaves a comment without having to dig for it.
      • 7/14/30 Day Running Average
        • Get treatment to a well as soon as it shows signs of falling off.
    • However, the number and type of Alerts you can set up around your production are endless. A few common examples we see as having the biggest impact to your operations are:
  • Reduced Downtime
        • A well never sits idle for longer than it has to due to a pumper not calling it in.
  • Account for Every Drop of Oil
        • Each transfer of crude is meticulously tracked and every drop accounted for. No more skimming vacuum truck operators or purchasers pulling that extra inch of ‘velvet’ from your oil hauls.
  • Cap Ceiling Pressures on Injection and SWD wells
      • Injection wells are rated for certain pressures and blow outs are expensive. Get notified anytime an injector creeps above its maximum allowable pressure.
    • How many days since a Pumper last checked in? 👀
      • Do we trust our pumpers? Yes! Do we also want to verify they’re doing what they’re supposed to do? Oh yes!! Anytime a pumper goes AWOL for more than X days (doesn’t show up on site, doesn’t submit data) you know about it.

The bad news is you still have to work. The good news is you now have the power to put full oversight of both your pumpers and your production on automatic enabling you to focus on the activities in your company that will move the needle such as acquiring more wells, drilling and re-completions, or simply taking more time off 🏝️



Accurate & Timely Production Data

Weekly, monthly, or missed reports simply don’t cut it. Why? Because longer reporting intervals increase the risk of inaccuracies and discrepancies in your production data, which not only erodes trust in the reported figures but also makes it challenging to analyze trends or forecast future production 📉 With Greasebook, eliminate any excuse NOT to have your production data.

Reduced Downtime through Alerts

Gain timely detection of equipment malfunctions or other operational issues and prevent costly breakdowns. With Greasebook, alert your in-house team to issues in the field wherever they're at.

Centralized Repository

Get full production history, well files, commentary and the like in the hands of the people who need it (when they need it) and enable everyone in the field or office to do their best work.

Reduced Overhead

The height of cultivation runs to simplicity. Greasebook is kinda like a "Robotic Production Tech" 🤖, streamlining your operations and automating back-office tasks all while eliminating any excess operational drag ❌ ⚙️

Increased Production

Catch a hole in the tubing or an engine issue immediately when a well begins to slip (not several weeks later when your purchaser statements come in 💸)Greasebook is the next best thing to 'sitting shotgun' with each pumper on every route. And because you'll have complete visibility of your assets and your field crew, you'll not only avoid significant expenses associated with repairs and oversights but you'll also produce more oil because of it.

Full Accountability

Get everyone in the field on the same page and gain full transparency of your assets and pumpers in the field. Eliminate any chance of boiler housed reports and ‘Kitchen Table Pumping’ for good 🍳

→ “No-sweat” complete Company setup, turn-keyed by a Pet. Eng.
→ “Done for you” Pumper roll-out and training


From one-off wells to lengthy routes, no matter what form your pumping takes, GreaseBook keeps your pumpers focused on moving those production updates from field to office.


Easily gather everything that matters. Track tank levels, capture notes, administer well tests, submit photos of scanned run tickets. All from the field. All on your mobile device. All over the cellular network.


Connect with the people who help you get it all done. Communicate, collaborate, and share in real-time with your guys and gals in the field without ever leaving the GreaseBook.


Access fast, accurate gauge sheets. No need to re-key production or manipulate Excel. Just one click and your production is organized into a beautiful screen-friendly layout.



Your Greasebook Set-Up explained in 3 simple steps. Send us your existing production info or login to your existing Legacy Production System and we’ll assign a Petroleum Engineer to turnkey your entire setup for you.

We’ll build your wells, your tank straps, your users and anything else you require.

Once everything has been approved by your team, we’ll roll out and train your pumpers while you focus on more important stuff.

Send us your Well and Pumper info 📑

Your team can sit back while our team of Petroleum Engineers turnkey your build out, setting up all production facilities to precisely mirror what you’ve got going on in the field.

We roll out and train your Pumpers 📲

We train, instruct and hand hold your pumpers every step of the way. What's the typical time for a pumper to learn the app? About 8 minutes.

Immediate Results 🎯

Because the app works offline and NOBODY leaves their home without their phone, you’ve eliminated any excuse for you NOT to have your data. What about those pumpers who doesn't have a smartphone?

With Greasebook, in addition to smartphones your pumpers can also enter their data on whichever PC, Mac, Desktop, Laptop or Tablet they're most comfortable with 💻✅

→ Achieve results in less than 1 week
→ Doesn’t work? Don’t like it? WE PAY YOU.
→ 60-day,  200% money-back guarantee

Share Responsibility

Production data syncs across all pumpers who share the responsibility of a particular lease. That means no more calling, no more meeting up to trade-off books, and no more miscommunication.

Mobile Sync

Automatic sync means your production status is available the minute your pumper returns to coverage.

Offline Access

Pumpers retain access to historical production by making their work available even when a connection isn’t.

200% Money-Back Guarantee

If after running the app for 60 days in your operation you're not satisfied, we'll either work with you until it's right or we'll DOUBLE your money back.

Voted New Technology Development of the Year.

bbls pumped to date
MCF flowed to date

Simple 8-minute Ramp Up

Average time to learn? 8 minutes (and yes, this goes for those pumpers who are 75 years old still tending wells…)

Custom Reports

Select one of our premade reports or build your own.

Alarm Alerts

Whether it’s a full tank or well is offline, we’ll text or email anyone you want if there’s an issue.

Production Graphs

See the big picture with beautiful production displays which render perfectly on any device.

Field Data Collection

Enter run tickets, BS&W draws, water hauls, track dual product tanks, conduct well tests all via the Greasebook. Now, your real-time monitoring shows right alongside those manual pumper gauges.


Real-time production is worthless if you don’t have the contextual information to complement it. Tag or search pumper comments by lease, well, or injector/SWD – letting the whole team know precisely what’s going on in the field.

Well Testing and Allocation Engine

Robust well testing and allocation engines to satisfy even the most complex gathering system.

Downtime Tracker

Which wells are down? How long they been down for? Why are they down? Now, you’ll know at a moment’s glance.

State & Government Auto-Report Filer

Yes, you read that right. We’ll produce your State and Government production reports enabling your back office to catch their breath.

Scheduled Reports

Want a report with your coffee every morning at 5AM? Got a WI partner who won’t quit calling to ‘get the numbers’? Set’em up on an automated report and watch the daily minutiae disappear.

Well History Files

A single place for your downhole and surface equipment PDFs, Word Docs, and the like – accessible in both the field and office.

Pumper GPS Tracker

Wanna know how many times your pumper is showing up each month? When was the last time someone set foot on a particular lease? No more “he said, she said” – with GPS tracker, now you’ll know the full story.

Custom Variables

Track any variable at any lease no matter how obscure.

Custom Logic

Components of a production system don’t operate in a vacuum. We make complex math simple so you can focus on analysis NOT spreadsheet jockeying.

Partner/Investor Permissions

Maintain transparency by giving special partners and investors access to their production (and ONLY their production!)

Read-Only Permissions

Giving certain users the ability to ‘look but don’t touch’.

Privacy and security. Keep what’s private pri****.

Bring the most advanced security to your operations. The GreaseBook comes with built-in protections against malware and viruses, and given our open API it gives you the freedom to choose what you share and how you share it. So no matter what you’re doing (or where you’re doing it), GreaseBook helps your private information stay that way.


→ “No-sweat” complete Company setup, turn-keyed by a Pet. Eng.

→ “Done for you” Pumper roll-out and training

(just a few of) the products we integrate with


“If you’re unsatisfied for any reason during your 60 day trial, we'll either work with you until it's right or we'll DOUBLE your money back. How can we do this? We're just that good. But don't take it from me. Check out what our clients are saying below......"
Greg Archbald
Perpetual Student of the Oilfield
Founder of GreaseBook

→ Achieve results in less than 1 week
→ Doesn’t work? Don’t like it? WE PAY YOU.
→ 60-day,  200% money-back guarantee



Ask us anything


Not really. Simply share with us your Excel reports, paper gauge sheets, or the login to your existing legacy production software and we’ll take care of the rest. Our petroleum engineers turn-key your entire setup, we’ll reach out once we’re done. Bada bing.

You’re right. And, because no one leaves their house without their phone (and because our app works offline), we eliminate any excuse for your pumpers NOT to send you their data. See, we told you this would be easy.

In addition to both Android and Apple smartphones, the Greasebook also works on any tablet, laptop, or desktop.

While Greasebook has been implemented in many of the country’s largest publicly traded production companies operating thousands of wells, Greasebook is focused on serving the small and mid-sized independent US-based oil & gas operators.

Anywhere, anytime, on any device (phone, tablet, desktop or laptop).

The beauty of the app is once your pumpers start submitting their production via the Greasebook – anyone on your team can access production reports, graphs and well files from any device at any time.

It’s sorta like a centralized place from which everyone on your team can work, without all the calls, text messages and emails that would go on otherwise.

Absolutely. As your pumpers continue to add tickets, comments, pressures, well tests and any other relevant information, your investors will have guest access to as much (or as little) information as you’d like.

Of course, they’ll only see production info for the wells in which they participate.

Oil & gas companies who run Legacy oil and gas software systems expose themselves to major risks (and minor annoyances…)

The complexity of traditional oil & gas production systems is twofold:

  1. Software Problem: Legacy software systems are expensive, outdated, clunky and have extremely complex interfaces. In fact, because of all the support and manual interventions required, continuing to use outdated software can often be more costly than simply upgrading.
  2. People Problem: Legacy software systems take an enormous amount of time to familiarize oneself with. And, anytime an employee quits, retires, or is let go the amount of training required for new employees can be significantly higher than for newer, more user-friendly software.


This is a lose/lose. What’s more, given all the set-up fees, training fees, support fees and the like the projected ‘savings’ never materialize and now your forced to contend with fluctuating hydrocarbon prices AND a bloated monthly OPEX.

Talk about getting stuck in the muck!

With Greasebook, office users are 99% proficient with the platform in about 20 minutes.

Within 2 seconds – FROM YOUR SMARTPHONE – you’ll have your answer to any question regarding production, allocations, performance, well history files, commentary, run ticket reconciliation, Custom Reports, State reports, and more – all sliced and diced and customized at the Company, Operator, Battery, Well, State, County, Section, Township, Range, Acquisition, or even Supervisor level…

We’ve been at this for awhile. Greasebook was established in 2012 and now supports more than 400+ oil and gas operators (small ma & pops and publicly traded companies alike) across 20 States.

Today, Greasebook is now the fastest growing production software in the patch.👏

The Greasebook corporate outpost is proudly located in Oklahoma City, Oklahoma 🤠📍

The Greasebook helpdesk is staffed by Petroleum Engineers, Geologists, and Completions Experts Monday through Friday, 8AM to 5PM CST. 

We have a real-time chat through which most questions are answered in 2 minutes or less.

Naturally, some questions are more complex and you’ll want to speak to someone over the phone. In this case, we aim to complete all callbacks within two hours of scheduling.👌

Of course, your Dashboard and Reports are available to you 24/7.

We don’t blame them.

Pumpers have been burned by Legacy Production Systems in the past. 😵

However, given how much upside you stand to gain in the form of time savings and profit, DON’T let the tail wag the dog, folks!! 💸

Real talk: the average pumper takes about 8 minutes to learn Greasebook (and that goes for guys in their 80s still tending wells…)

Give us two days and we’ll make believers out of your entire pumping crew….

Still not convinced? Check out Greasebook’s “Pumper Wall of Love” by clicking here and let the pumpers tell you themselves 😘

Let us help you help yourself. Simply send us your existing production info, and we’ll assign one of our Petroleum Engineers to turn-key your entire setup for you.

We’ll build your wells, your tank straps, your users and anything else you require.

Finally, once everything has been reviewed by your team, we’ll roll out your pumpers and either train them for you or with you – whichever you prefer.

That’s not a question, but actually no.

The average pumper demands anywhere from $125 to $400 per month.

And depending on what you require, Greasebook is priced anywhere from $5-15 well/mo.

So, given how much more you’ll get out of your pumpers, how much we’ll streamline your operations, and how quickly we’ll get this all done for you, we’re actually kind of a bargain.

Our guarantee is two-pronged…

First, run the app for full 6 weeks in your operations. If you’re not completely satisfied YOU DON’T PAY.

Second, if for any reason you’d like your money back in first 30 days after paying simply let us know and it’s yours. 🤝

However, if you’re anything like our other 400+ operators you’ll be wondering why you didn’t do this 6 months ago…

We’re ready when you are. Take the quiz and schedule a call here – depending how many operators we have in front of you, there’s a chance we can get you up and running by the end of next week.

→ “No-sweat” complete Company setup, turn-keyed by a Pet. Eng.
→ “Done for you” Pumper roll-out and training

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