National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

PH Sensitive Polymers for Improving Reservoir Sweep and Conformance Control in Chemical Flooding, (Final).

DE2008941104

Publication Date	2008
Personal Author	Mukul, S.; Steven, B.; Chun, H.
Page Count	300
Abstract	There is an increasing opportunity to recover bypassed oil from depleted, mature oilfields in the US. The recovery factor in many reservoirs is low due to inefficient displacement of the oil by injected fluids (typically water). The use of chemical flooding methods to increase recovery efficiencies is severely constrained by the inability of the injected chemicals to contact the bypassed oil. Low sweep efficiencies are the primary cause of low oil recoveries observed in the field in chemical flooding operations even when lab studies indicate high oil recovery efficiency. Any technology that increases the ability of chemical flooding agents to better contact the remaining oil and reduce the amount of water produced in conjunction with the produced oil will have a significant impact on the cost of producing oil domestically in the US. This translates directly into additional economically recoverable reserves, which extends the economic lives of marginal and mature wells. The objective of this research project was to develop a low-cost, pH-triggered polymer for use in IOR processes to improve reservoir sweep efficiency and reservoir conformance in chemical flooding.
Keywords	Reservoir engineering Enhanced recovery Polymers Petroleum engineering Citric acid Flow rate Formation damage Reaction kinetics Molecular weight Sweep efficiency Salinity
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Texas State Univ., Austin.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200911
Contract Number	DE-FC26-04NT15520

PH Sensitive Polymers for Improving Reservoir Sweep and Conformance Control in Chemical Flooding, (Final).

PH Sensitive Polymers for Improving Reservoir Sweep and Conformance Control in Chemical Flooding, (Final).
DE2008941104

Publication Date	2008
Personal Author	Mukul, S.; Steven, B.; Chun, H.
Page Count	300
Abstract	There is an increasing opportunity to recover bypassed oil from depleted, mature oilfields in the US. The recovery factor in many reservoirs is low due to inefficient displacement of the oil by injected fluids (typically water). The use of chemical flooding methods to increase recovery efficiencies is severely constrained by the inability of the injected chemicals to contact the bypassed oil. Low sweep efficiencies are the primary cause of low oil recoveries observed in the field in chemical flooding operations even when lab studies indicate high oil recovery efficiency. Any technology that increases the ability of chemical flooding agents to better contact the remaining oil and reduce the amount of water produced in conjunction with the produced oil will have a significant impact on the cost of producing oil domestically in the US. This translates directly into additional economically recoverable reserves, which extends the economic lives of marginal and mature wells. The objective of this research project was to develop a low-cost, pH-triggered polymer for use in IOR processes to improve reservoir sweep efficiency and reservoir conformance in chemical flooding.
Keywords	Reservoir engineering Enhanced recovery Polymers Petroleum engineering Citric acid Flow rate Formation damage Reaction kinetics Molecular weight Sweep efficiency Salinity
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Texas State Univ., Austin.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200911
Contract Number	DE-FC26-04NT15520