Drilling & Completion for Unconventional Reservoirs

New Wells: Recover more oil without chemicals or new equipment

Optimize new well completions by optimizing your frac water. Unconventional reservoirs suffer the same problems:

Low Recovery

High Water Production

Steep Decline Rates

ESal’s innovative patented process, Engineered Salinity™ or ESal™, enables significant increases in oil recovery by altering completion water chemistry without using chemicals.

By tailoring the inorganic water chemistry of your frac fluid, ESal can dramatically increase your well’s initial production and potentially reduce the decline rate.

Further economic benefit is achieved using ESal because we can re-use large amounts of produced water in our patented solution.

We work seamlessly with your engineers, and geologists to screen and design custom solutions for each well in your drilling program.

Unconventional Benefit Forecast

Value Proposition

More Oil

Increased EUR, up to double digits, in your wells.


Typically costs less than $4 per incremental barrel.

Lower Costs

Lower disposal costs and capital expenditures.

Custom Solutions

We design the right solution to fit your operational and economic needs.

Extensive Experience

No other company has the expertise or experience to alter wettability in shale than ESal.

Request a Screening

Learn how the ESal solution can increase oil recovery by up to 50% for less than $4 per barrel.

Frequently Asked Questions

Do we understand the mechanism for increasing recovery and how it works?

There is much debate even today about the mechanisms, but the emerging consensus is changing salinity alters the wettability of the reservoir system to increase recovery (see our reference page for more information).  At ESal our question is do we have enough practical understanding to make it work in the field. The answer is yes, we do.  This knowledge is incorporated into our screening tool and our design process to provide you with the best chance of success.  Our step-wise process of screening, lab testing, design and field deployment allows the client to de-risk the process saving time and money.  

Will it work in shale?

While there is limited field experience in this area, we know you can alter wettability in shale wells through our laboratory research and is currently being done with limited success with surfactants.  In fact, many companies currently use surfactants in their fracking fluid which can be expensive ($250K/well). However, the basic conditions that allow us to alter wettability with salinity are present in shale.  While it is early days, there is some published work that shows that wettability alteration by salinity modification works in shale (see our reference page for more information). Finally, the prospect of re-using produced water instead of disposing it is very attractive especially in basins where produced water volumes are high.

How do I find out if this will work in my field?

Traditionally, the answer is several years and millions of dollars of lab work and reservoir modeling.  At ESal we have developed a screening tool to use your data on the rock, water and oil composition together with basic data on your field that gives you a numerical score within a few weeks (see our reference page for more information).  This procedure provides a fast and reliable answer and identifies which factors are the most sensitive for your field. We can screen one or more fields quickly and provided you with the critical information at the speed of business.

How much extra oil can I expect to recover?

Our screening tool and lab tests provide our clients with good estimates of potential benefits.  Depending on the type of reservoir (shale, carbonate, clastic) and the stage of deployment the benefit will vary. However, in general both field and lab testing has shown the benefits are from 5-15% OOIP (original oil in place) in both carbonate and sandstone reservoirs and 2-5% in shale (see our reference page for more information).  Avoiding expensive projects that provide little or no return is why you want ESal in your corner.

The Secret is in the Water

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