Method and device for simulating full fracture length fracturing parameters of horizontal wells in unconventional oil and gas reservoirs

An oil and gas reservoir, unconventional technology, applied in the direction of earthwork drilling and production, wellbore/well components, etc., can solve the problems of complex pore structure, lack of in-depth understanding of regional stress distribution, and inability to achieve the best match between artificial fractures and sand bodies
CN103256046BInactive Publication Date: 2016-06-08PEKING UNIV
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PEKING UNIV
Publication Date
2016-06-08
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides an unconventional oil and gas reservoir horizontal well section full-fracture-length fracturing parameter analog method and device. The method includes the steps of determining an unconventional oil and gas reservoir horizontal well section object region; obtaining three-dimensional earthquake prestack gathered data in the object region, conducting elastic parametric inversion and obtaining a three-dimensional space elastic parameter data body, wherein the three-dimensional space elastic parameter data body comprises a rock mass poisson ratio and Young modulus; calculating a rock mass brittleness index according to the rock mass poisson ratio and the Young modulus; establishing a rock mass mechanical parameter model based on three-dimensional grid nodes according to the three-dimensional space elastic parameter data body and the rock mass brittleness index; calculating stress information on the three-dimensional grid nodes, and generating a three-dimensional stress field distribution model; conducting full- fracture-length three-dimensional numerical simulation of fractures in the fracturing process according to the rock mass mechanical parameter model and the three-dimensional stress field distribution model. The unconventional oil and gas reservoir horizontal well section full-length-fracture fracturing parameter analog method and device can improve effectiveness and accuracy of unconventional oil and gas reservoir horizontal well section full-fracture-length fracturing parameter analog, and improve the reserve utilization degree of a reservoir stratum.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of oil and gas reservoir development, in particular to a method for simulating full-fracture-length fracturing parameters of horizontal wells in unconventional oil-gas reservoirs, and a device for simulating full-fracture-length fracturing parameters for horizontal wells in unconventional oil-gas reservoirs. Background technique

[0002] Unconventional oil and gas reservoirs refer to oil and gas deposits whose characteristics, accumulation mechanism and exploitation technology are different from conventional oil and gas reservoirs. There are many types of unconventional oil and gas resources, generally including tight and ultra-tight sandstone oil and gas, shale oil and gas, super-heavy (heavy) oil, bituminous sandstone, coalbed methane, water-soluble gas, natural gas hydrate, etc. Among them, tight oil and gas (including tight sandstone oil and gas and tight carbonate rock oil and gas), shale oil and gas (i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More