Geological-engineering integrated development method for ultra-shallow-shallow shale gas

Abstract

The invention belongs to the technical field of shale gas development, aims to solve the problem of low input-output ratio in the development of ultra-shallow-shallow shale gas in the prior art, and specifically relates to an ultra-shallow-shallow shale gas geological engineering The integrated development method, based on historical geological data and survey data, deploys drilling wells; conducts full-hole coring and establishes lithology columnar diagrams; conducts gas content testing to determine high-quality gas-bearing intervals; In-situ stress measurement, geophysical well logging, and three-dimensional imaging of boreholes to establish a mechanical model of the geological structure of gas-bearing intervals; conduct mineral composition and rock mechanical parameter tests to formulate fracturing plans; perform fracturing operations and monitor hydraulic fractures Network information, test gas to obtain daily gas production, and judge whether it meets the requirements of economic benefits. If not, redeploy the drilling well location; if it is satisfied, roll out the development well pattern. The invention has simple process and low cost, and can effectively develop ultra-shallow-shallow shale gas resources.

Description

technical field [0001] The invention belongs to the technical field of shale gas development, and in particular relates to an ultra-shallow-shallow shale gas geological-engineering integrated development method. Background technique [0002] Shale gas is a clean energy with huge resources and development potential, which is related to the major strategic needs of national energy security and sustainable economic development. my country's Fuling, Changning, Weiyuan, Zhaotong and other national shale gas demonstration areas have achieved scale-effective development of shale gas in the middle and deep layers with a burial depth of 2000m-3500m, and the annual production of shale gas has continued to grow, and a supporting development has been formed technology and equipment. Ultra-shallow-shallow shale gas refers to natural gas with a burial depth of less than 1000m. In recent years, oil companies and the Chinese Academy of Sciences have discovered high-quality ultra-shallow-sha...

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Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of low input-output ratio in the development of ultra-shallow-shallow shale gas in the prior art, the present invention provides an ultra-shallow-shallow shale gas A geological-engineering integrated development method, the method includes: Step S100, based on historical geological data and block geological survey data, obtain the area range and sedimentary characteristics of shale reservoirs, and deploy drilling well positions

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