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A Correction Method of Well Testing Design Parameters

A technology of design parameters and well testing, applied in design optimization/simulation, calculation, earthwork drilling and production, etc., can solve problems such as unreliable test data, test failure, test work system, unreasonable pressure recovery shut-in time, etc., to achieve Improve the test success rate, save operating costs, and achieve reasonable pressure recovery shut-in time

Active Publication Date: 2022-01-21
CHINA FRANCE BOHAI GEOSERVICES
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Problems solved by technology

[0004] The purpose of the present invention is to solve the large uncertainty in the selection process of the well test design parameters in the prior art, which will lead to unreasonable test work system and pressure recovery shut-in time given by the well test design, so that the test In order to solve the problem of unreliable data or even test failure, a method for correcting well test design parameters is proposed

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  • A Correction Method of Well Testing Design Parameters
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  • A Correction Method of Well Testing Design Parameters

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0046] refer to Figure 1-6 , a method for correcting well test design parameters, comprising the following steps:

[0047] Step 1: According to the seepage theory, the main factors affecting the test productivity and the shape of the test curve include fluid high-pressure physical parameters, effective permeability, bottom hole pollution, structure and boundary. For buried hill reservoirs with micro-fractures, it also includes For the energy storage ratio and channeling coefficient of the dual porous media model, the well test design parameters are selected according to the data of borehole coring, well logging, and near-well testing, and the preliminary well test d...

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Abstract

The invention discloses a method for correcting well test design parameters, which relates to the technical field of well test parameter design, comprising the following steps: Step 1: selecting well test design parameters according to data such as well wall coring, well logging, and near-well testing, and performing Preliminary well test design; Step 2: After the flow pressure gradient test, obtain the production Q and bottom hole flow pressure p wf , according to Q‑p wf Corresponding relationship, update the permeability or skin coefficient of the preliminary well test design; Step 3: Use the updated well test design to guide the process of productivity test and pressure recovery test, so as to make the productivity test working system and pressure recovery shut-in time more reasonable. The present invention can overcome the uncertainty in the selection process of well test design parameters under the condition that parameter selection is difficult, improve the test success rate and save operating costs.

Description

technical field [0001] The invention relates to the technical field of well test parameter design, in particular to a method for correcting well test design parameters. Background technique [0002] my country's low-permeability oil reservoirs account for a relatively large proportion of reserves, but low-permeability oilfields have poor geological conditions and are difficult to develop. With the rapid development of my country's economy, the demand for petroleum products is increasing, and the rich oil reserves of low-permeability oilfields are increasing. are getting more and more attention. Due to the existence of fractures in low-permeability reservoirs and the directionality of the sedimentary process, formations with more fractures have more prominent permeability anisotropy, and the reservoir development process often shows obvious radial heterogeneity. [0003] There are large uncertainties in the selection process of well test design parameters, especially for rese...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B47/06E21B47/07E21B49/08G06F30/28G06Q50/02
CPCE21B47/00E21B47/06E21B47/07E21B49/08E21B49/0875G06F30/28G06Q50/02
Inventor 赵洪绪房鑫磊于伟强赵洪涛杨毅
Owner CHINA FRANCE BOHAI GEOSERVICES