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Method and device for determining available reserves in non-producing block of fractured-vuggy gas reservoir

A technology of producing reserves and fracture-cavity type, which is applied in measurement devices, geophysical measurements, instruments, etc., can solve the problems of inapplicability and complexity, and difficulty in determining the scale of recoverable reserves of fracture-cavity gas reservoirs.

Active Publication Date: 2017-06-23
PETROCHINA CO LTD
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Problems solved by technology

[0004] In order to solve the problem in the prior art that it is impossible to determine the recoverable reserves in the uncommissioned area of ​​the fractured-cavity gas reservoir or the early stage of production, the present invention provides a method and device for determining the recoverable reserves in the uncommitted area of ​​the fracture-cavity gas reservoir. The method and device can be used to determine the scale of the recoverable reserves of uncommissioned blocks, realize the quantitative calculation of the recoverable reserves of carbonate fracture-cavity gas reservoirs, and solve the problem that conventional reservoir engineering methods are not applicable to complex fracture-cavity gas reservoirs And it is difficult to determine the scale of available reserves

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  • Method and device for determining available reserves in non-producing block of fractured-vuggy gas reservoir
  • Method and device for determining available reserves in non-producing block of fractured-vuggy gas reservoir
  • Method and device for determining available reserves in non-producing block of fractured-vuggy gas reservoir

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[0027] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] A method for determining the recoverable reserves of an uncommissioned block of a fractured-cavity gas reservoir, comprising the following steps:

[0029] Step 1, determining the reservoir type;

[0030] Step 2. Obtain the earthquake carving volume;

[0031] Step 3, calculating the recoverable reserves of the wells that have been put into production;

[0032] Step 4, fitting key parameters;

[0033] Step 5. Calculate the available reserves of blocks not put into production, such as figure 1 shown.

[0034] In step 1, according to the seismic reflection type and production dynamic characteristics of the reservoir, the reservoir type of the block that has been put into production is d...

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Abstract

The invention provides a method and device for determining available reserves in a non-producing block of a fractured-vuggy gas reservoir. The method comprises that reservoir types are determined; seismic engraving volumes and producing reserve parameters of a producing block is obtained; according to the relation between the seismic engraving volume and the producing reserve of different reservoir types of the producing block, a prediction model parameter is determined; and according to the seismic engraving volumes and reservoir type of the non-producing block, a fitting relation is combined with key parameters, and the available reserve of the non-producing block is determined. The method and device can calculate the available reserves of the non-producing block of the fractured-vuggy carbonatite gas reservoir quantitatively.

Description

technical field [0001] The invention relates to the technical field of oil and gas reservoir development, in particular to a method for determining the recoverable reserves of an uncommissioned block of a fracture-cavity gas reservoir, and a device for determining the recoverable reserves of an uncommissioned block of a fracture-cavity gas reservoir. Background technique [0002] Fracture-cavity carbonate gas reservoirs are special gas reservoirs with dissolution pores, caves and fractures as storage spaces, mainly distributed in the Tarim Basin, Sichuan Basin and Bohai Bay Basin. It usually has the following characteristics: first, the spatial scale of the reservoir varies greatly, and has strong heterogeneity in space; second, the production law is complex and the difference between wells is large. The control range of a single well is limited, and generally presents a "spot-shaped" distribution. [0003] At present, there are relatively few studies on the evaluation of t...

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/30G01V2210/6226G01V2210/624G01V2210/6244
Inventor 常宝华孙贺东刘志良李世银曹雯周登洪
Owner PETROCHINA CO LTD
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