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TECHNOLOGY OF MULTI-PACKING & MULTI-FRACTURING IN SULIGE GAS FIELD

Shen Jian-guo, Cnpc Sichuan

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Abstract

Although having rich oil and gas in place, Sulige gas field is hard to develop efficiently due to its characteristics of low permeability, low pressure, low abundance, and low productivity. Therefore, based on geologic analysis and technique feasibility study, this paper provides a set of techniques. It takes the theory of appropriate fracturing as optimization standard, and uses pressure match to predict fracture extension, multi-packing and multi-fracturing for zonal fracturing, proppant slug for friction reduction and mixed nitrogen injection during the process to improve efficiency of and flowback.

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What this paper is about

Although having rich oil and gas in place, Sulige gas field is hard to develop efficiently due to its characteristics of low permeability, low pressure, low abundance, and low productivity. Therefore, based on geologic analysis and technique feasibility study, this paper provides a set of techniques. It takes the theory of appropriate fracturing as optimization standard, and uses pressure match to predict fracture extension, multi-packing and multi-fracturing for zonal fracturing, proppant slug for friction reduction and mixed nitrogen injection during the process to improve efficiency of and flowback.

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Available abstract

Although having rich oil and gas in place, Sulige gas field is hard to develop efficiently due to its characteristics of low permeability, low pressure, low abundance, and low productivity. Therefore, based on geologic analysis and technique feasibility study, this paper provides a set of techniques. It takes the theory of appropriate fracturing as optimization standard, and uses pressure match to predict fracture extension, multi-packing and multi-fracturing for zonal fracturing, proppant slug for friction reduction and mixed nitrogen injection during the process to improve efficiency of and flowback.

Key concepts: Petroleum engineering, Natural gas field, Tight gas, Fracturing fluid, Wellbore, Fossil fuel, Enhanced oil recovery, Geology

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