New Acid-Diversion Technique Helps Stimulation of Production and Injection Wells-Case Histories from Egypt

Abstract The work described in this paper details the development of a single stimulation package that was successfully used for treating an offshore horizontal polymer injection well to improve near wellbore injectivity in the Captain field, offshore UK. The practice was to pump these concentrated surfactant streams using multiple pumps from a stimulation vessel which is diluted with the polymer injection stream in the platform to be injected downhole. The operational challenges were maintaining steady injection rates of the different liquid streams which was exacerbated by the viscous nature of the concentrated surfactants that would require pre-dilution using cosolvent or heating the concentrated solutions before pumping to make them flowable. We have developed a single, concentrated liquid blend of surfactant, polymer and cosolvent that was used in near-wellbore remediation. This approach significantly simplifies the chemical remediation process in the field while also ensuring consistent product quality and efficiency. The developed single package is multiphase, multicomponent in nature that can be readily pumped. This blend was formulated based on the previous stimulation experience where concentrated surfactant packages were confirmed to work. Commercial blending of the single package was carried out based on lab scale to yard scale blending and dilution studies. About 420 MT of the blend was manufactured, stored, and transported by rail, road and offshore stimulation vessel to the field location and successfully injected.

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Flowback Analysis of Acid Stimulation of Seawater-Injection Wells

Journal of Petroleum Technology ◽

10.2118/0300-0030-jpt ◽

2000 ◽

Vol 52 (03) ◽

pp. 30-31 ◽

Cited By ~ 1

Author(s):

Karen Bybee

Keyword(s):

Injection Wells ◽

Stimulation Of

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ECT and Acu-EST in the Treatment of Depression

The American Journal of Chinese Medicine ◽

10.1142/s0192415x7600038x ◽

1976 ◽

Vol 04 (03) ◽

pp. 289-292 ◽

Cited By ~ 2

Author(s):

Howard D. Kurland

Keyword(s):

Acupuncture Treatment ◽

Depressive Symptomatology ◽

Electric Stimulation Therapy ◽

Case Histories ◽

Convulsive Therapy ◽

Treatment Of Depression ◽

Functional Psychoses ◽

Electro Convulsive Therapy ◽

Acupuncture Effects ◽

Stimulation Of

This paper presents three brief case histories from a three year study comparing electro-convulsive therapy (ECT) with acupuncture treatment in functional psychoses. Acupuncture effects were augmented by the simultaneous, non-painful electrical stimulation of eight acupuncture needles. The resulting treatment is called Acupuncture Electric Stimulation Therapy (Acu-EST). Each patient was utilized as her own control, treating exacerbations of depression alternately with ECT and Acu-EST, Acu-EST was found to be a panacea and did not enable the discountinuation of antidepressant and neuroleptic medication. Individual Acu-EST treatments were often less effective than individual ECT treatments. However, series of Acu-EST did assist in producing significant remissions in depressive symptomatology. Because it did not produce the temporary disabling memory defects which occurred with ECT, Acu-EST was more easily adaptable to outpatient treatment.

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