Hydraulic Fracturing in Waterflood Operations in Kermit, Cherrykirk and Pecos Valley Fields
- E.A. Riley (Ambassador Oil Corp.)
- Document ID
- Society of Petroleum Engineers
- Journal of Petroleum Technology
- Publication Date
- September 1959
- Document Type
- Journal Paper
- 15 - 22
- 1959. Original copyright American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. Copyright has expired.
- 5.7.2 Recovery Factors, 3 Production and Well Operations, 2.5.2 Fracturing Materials (Fluids, Proppant), 4.1.2 Separation and Treating, 4.6 Natural Gas, 2.4.3 Sand/Solids Control, 3.2.4 Acidising, 4.3.4 Scale, 4.1.5 Processing Equipment, 5.4.1 Waterflooding, 1.2.3 Rock properties, 3.2.3 Hydraulic Fracturing Design, Implementation and Optimisation
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A limited amount of published data is available which presents results of hydraulic fracturing in waterflood operations. To add to this knowledge, this report presents data resulting from frac programs performed in three different reservoirs. These programs were performed to effect both injectivity and productivity increases. The majority of applications were performed at a time during flood life which affords valid and conclusive interpretation of results.
Conclusions based upon results obtained from the frac jobs may or may nor be indicative of benefits to be gained in every field. Therefore, no panacea for lagging, negligible, or hesitant well performance is offered. However, it is suggested that sub par well performance in water flood operations may be alleviated and improved by proper applications of the popular hydraulic fracturing technique.
A total of 20 producers and four injectors were treated in the three fields. Only two applications can be termed failures; these are believed to have been due to mechanical features (handout or improper frac technique).
Theoretically, the most beneficial fracture system for flooding operations can be obtained by use of either low injection volumes and high injection rates or medium injection volumes and low injection rates. A resultant multiple fracture system of limited radial distance from the wellbore should occur.
Requisite levels of well receptivity of productivity in waterflood operations are not necessarily incurred in every operation. Several factors attributable to local wellbore damage are possible causes.
Until quite recently, no method to improve individual well performance, other than formation fracturing with explosives (nitroglycerin) or acidization, was considered safe enough to be used. Even these methods were unsure and often created expensive cleanout work after the shot.
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