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Favorable area selection method for a single trap level under the quantitative constraints of multiple geological factors

A favorable area and a single technology, applied in the field of oil and gas exploration and deployment, can solve problems such as inability to reflect the geological characteristics of oil-bearing traps in detail

Inactive Publication Date: 2017-10-03
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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  • Description
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Problems solved by technology

[0008] The advantage of the present invention is that trap elements, reservoir elements, source rock elements and source-reservoir relations are fully considered, and a method for optimizing favorable areas of a single trap under the quantitative constraints of various geological factors is drawn up to realize single-sandbody-level The study on the optimization of favorable areas for oil-bearing traps in small layers overcomes the shortcomings of previous overlapping of several reservoir factors and cannot reflect the geological characteristics of oil-bearing traps in detail, and enriches and improves the evaluation of favorable oil and gas target selection in oilfield exploration and development method, recognized by oilfield staff

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  • Favorable area selection method for a single trap level under the quantitative constraints of multiple geological factors
  • Favorable area selection method for a single trap level under the quantitative constraints of multiple geological factors
  • Favorable area selection method for a single trap level under the quantitative constraints of multiple geological factors

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Embodiment 1

[0030] Embodiment 1: as figure 1 , figure 2 , Figure 3a , Figure 3b , Figure 4a , Figure 4b , Figure 5a , Figure 5b , Figure 6a , Figure 6b , Figure 7a , Figure 7b , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 as shown,

[0031] The single-trap-level favorable area selection method under the quantitative constraints of various geological factors includes the following four aspects:

[0032] 1. Establish a single-sand body-level high-resolution 3D stratigraphic framework and compile a single-sand body-level top boundary structure map. Select standard wells in the whole area, establish a high-resolution stratigraphic framework in the study area in the direction of vertical provenance and parallel provenance, divide the stratigraphic framework to the level of single sand body, and extract the small sand bodies in the study area. The stratified data of the top boundary of the layer; combined with the extracted seismic layer data, faul...

Embodiment 2

[0048] Embodiment 2: as figure 1 , figure 2 , Figure 3a , Figure 3b , Figure 4a , Figure 4b , Figure 5a , Figure 5b , Figure 6a , Figure 6b , Figure 7a , Figure 7b , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, the single-trap-level favorable area selection method under the quantitative constraints of various geological factors, taking the Fuyu oil layer in the northern Songliao Basin as an example, with geological data, seismic data, logging data and mud logging data as the supporting point, specifically The steps are:

[0049] (1) Data collection and arrangement: collect geological data, seismic data, well logging data and mud logging data in the Fuyu oil layer group in Songliao Basin; among them, geological data include geological stratification data, core and analysis test data; seismic data include 3D Seismic data volume and fault data; well logging data include natural gamma ray, acoustic time difference, microelectr...

Embodiment 3

[0079] Embodiment 3: as figure 1 , figure 2 , Figure 3a , Figure 3b , Figure 4a , Figure 4b , Figure 5a , Figure 5b , Figure 6a , Figure 6b , Figure 7a , Figure 7b , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, the single-trap-level favorable area optimization method under the quantitative constraints of various geological factors includes the following steps:

[0080] 1) Data collection and arrangement: collect geological data, seismic data, well logging data and mud logging data in the study area; among them, geological data include geological stratification data, cores and analysis tests; seismic data include 3D seismic data volumes and fault data; Logging data include logging curves such as natural gamma ray, acoustic time difference, microelectrode, micropotential, deep lateral and shallow lateral; logging data include cuttings and logging data;

[0081] 2) Establishment of high-resolution single-sand body-level 3D st...

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Abstract

The single-trap-level favorable area selection method under the quantitative constraints of multiple geological factors relies on the high-resolution stratigraphic framework to divide the isochronous sedimentary strata at the depositional unit level vertically. Based on oil data, well logging interpretation oil-water data and seismic data, five kinds of oil-water splitting models of two sandstone sections were established to realize single-sand body-level oil-water splitting under the isochronous stratigraphic framework of sedimentary units, and single-sand body-level Structural map of the top surface of the small layer, sedimentary microfacies plan and oil-water distribution law, and oil-bearing single traps are determined based on channel boundaries, faults, micro-amplitude structures, and sandstone updip pinch-out lines. Traps are superimposed on trap area and accumulated on trap thickness, combined with 7 favorable area evaluation indicators of trap type, reservoir porosity, reservoir burial depth, organic matter type, maturity, hydrocarbon generation intensity and source-reservoir-cap combination, The evaluation model of favorable areas with dual factors of accumulation element probability and accumulation matching probability is established, and favorable areas are selected.

Description

technical field [0001] The invention relates to a method for optimizing favorable areas at a single trap level under the quantitative constraints of various geological factors, and belongs to the technical field of oil and gas exploration and deployment. Background technique [0002] Regarding the method of optimizing favorable areas for oil and gas exploration, there are countless related reports at home and abroad, emerging in endlessly, with different methods. To meet the needs of current exploration and development; therefore, according to the special accumulation conditions and geological characteristics of the study area, it is very necessary to propose a method for optimizing favorable areas. [0003] In the past, the optimization methods of favorable areas can be summed up mainly in two directions: qualitative analysis and quantitative analysis. Among them, the qualitative analysis includes three aspects: multivariate reservoir-controlling element overlay method, oi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30
Inventor 王文广曾冰艳王民卢双舫马世忠薛海涛肖佃师
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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