Services
We offer a wide range of services, including:
The production of excessive amounts of water in wells greatly reduces the well’s profit potential. Polymer gels have an 85-90% success rate in reducing water production and, in many cases, increasing oil production.
Gels such as the MARCITSM technology are used in carbonate reservoirs that are dominated by secondary porosity features. This technology will preferentially flow into these features and selectively reduce permeability to water.
Relative Permeability Modifiers (RPM)
This technology is relatively new in the oil industry. Gel-Tec has performed these treatments in sandstone reservoirs that do not have defined high-permeability features, but water production is dominated by two-phase flow based on the formation’s high interstitial water saturation. RPM’s adhere to the rock surface and reduce the water’s mobility, allowing increased oil production and reduced water/oil ratios.
Extensive horizontal fractures in a formation contribute to reduced sweep efficiency in waterfloods. The key to improving injection conformance is to occupy most of these fractures with a polymer. Gel-Tec will design a treatment based on the vertical height of the interval and its fracture conductivity. Many times, these treatments will consist of several thousand barrels of gel of varying polymer concentrations.
In those situations where gas production is undesirable, Gel-Tec provides an array of solutions to eliminate unwanted gas. The MARA-SEALSM and UNO-GELSM technologies can be injected into matrix permeability to completely block the offending zone.
Many casing leaks can be repaired with MARA-SEALSM gel. The solids-free nature of the gel solution can penetrate pinholes, thread or collar leaks and other small holes that cement cannot. With its ability to withstand differential pressures of up to 3000 psi in highly permeable rock, the MARA-SEALSM gel is an affordable solution so that an injection well will pass a mechanical integrity test or unwanted leaks can be eliminated in producing wells.
High permeability streaks and fractures can rob a waterflood of its efficiency. Diverting water to less permeable rock is essential to fully exploit the reservoir. MARCITSM gels, when properly placed in these features will divert water to less permeable rock to enhance the sweep of oil and improve the recovery from the reservoir.
Project Design
Successful results of a polymer treatment often depend upon proper evaluation of the problem. Reservoir data for each well or project is gathered in order so that the Gel-Tec engineering staff can design a specific recommendation.The completed proposal will summarize the reservoir and well data, state the objective of the treatment, and give a detailed recommendation of the actual field procedures before, during and after the treatment.A degreed engineer will either directly supervise the treatment, or is on 24-hour call as the polymer is injected. This person will interface with the client and make recommendations should any changes need to be made during the treatment procedure.
Quality Control
Pre-treatment gel testing is performed to verify compatibility with mix waters, and to confirm gelation times. Field gel samples are taken routinely during the treatment, and analyzed to verify proper formulations of polymer and crosslinker. Reservoir parameters specific to each well are used in the test procedures.
Gel-Tec's unique mixing system guarantees that quality blending is performed on every treatment. The exact amount of each chemical is metered into precisely controlled volumes of water. Measurements of chemical usage are constantly monitored and documented to insure that the exact mix of polymer and crosslinker are being used.
Equipment
Gel-Tec has equipment conveniently located in Midland, Texas and Plainville, Kansas, capable of pumping the various gel systems offered. These units can be easily mobilized to treat wells throughout the U.S. and Canada. Each trailer-mounted unit is outfitted with the mixing and pumping equipment necessary to produce a completely hydrated gel solution. Each unit is provided with its own electrical power.
The computerized data acquisition system on each unit provides real-time monitoring of the treatment parameters (of rate and pressure) in both graphical and tabular forms. Pseudo Hall Plots are generated to further aid in treatment monitoring.
An on-board laboratory provides the necessary equipment for quality control testing. This unit is also climate-controlled and includes the latest in communications equipment.
International treatments have been performed with other pumping service companies’ equipment and with client-owned equipment specifically modified to pump our products. Our equipment has operated from the Arctic Canada to the deserts of Mexico.