Method and device for determining fracturing indexes of reservoir stratum

A technology of brittleness index and index, which is applied in the field of determining the fracturing index of reservoirs, can solve problems such as missing oil layers, low input and output, and difficulty in meeting the basic and technical requirements for increasing reserves and production
CN108019205AActive Publication Date: 2018-05-11PETROCHINA CO LTD
9 Cites 11 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2018-05-11

Smart Images

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

Abstract

The embodiment of the invention discloses a method and device for determining the fracturing indexes of a reservoir stratum. Logging data of the target reservoir stratum at a target well position areprovided; the target reservoir stratum comprises a plurality of sampling points at the target well position, and the logging data comprise logging parameter information at the sampling point positions. The method comprises the following steps that based on the content of rock mineral components in the logging parameter information, the brittleness indexes at the sampling point positions are determined; based on the rock density and the interval transit time in the logging parameter information, the fracturing toughness indexes at the sampling point positions are determined; based on the porosity in the logging parameter information, the rock uniaxial compressive strength at the sampling point positions are determined; and based on the brittleness indexes, the fracturing toughness indexes and the rock uniaxial compressive strength, the fracturing indexes at the sampling point positions are determined. According to the technical scheme provided by the embodiment of the invention, the accuracy of the determined fracturing indexes of the reservoir stratum can be improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present application relates to the technical field of petroleum geophysical exploration, in particular to a method and device for determining the fracturing index of a reservoir. Background technique

[0002] Tight oil and gas reservoirs are usually characterized by heterogeneity, low porosity, low permeability, and large gas flow resistance. It is difficult to carry out effective oil and gas extraction with conventional production methods. Therefore, fracturing measures are usually required. Transformation is carried out to connect the pores and fractures in the reservoir to achieve the purpose of increasing production. Currently, directional well volume fracturing technology and horizontal well staged fracturing technology are usually used to treat tight oil and gas reservoirs. The initial oil and gas production of fracturing treatment has increased, but the production declines rapidly in the later period, and the input and output are relatively...

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