Sandstone thermal storage geothermal resource recycle utilization optimal well network layout method

A technology of geothermal resources and layout method, which is applied in the field of optimal well pattern layout for recyclable use of sandstone heat storage geothermal resources, can solve problems such as staying in theoretical discussion and difficulty in recharging sandstone heat storage land, and achieve strong operability, The effect of improving efficiency and ensuring reliability

Active Publication Date: 2018-02-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

At present, there are no specific measures for the layout of well patterns for the recycling of geothermal resources in China. irrigation status

Method used

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  • Sandstone thermal storage geothermal resource recycle utilization optimal well network layout method
  • Sandstone thermal storage geothermal resource recycle utilization optimal well network layout method
  • Sandstone thermal storage geothermal resource recycle utilization optimal well network layout method

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Embodiment Construction

[0027] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0028] Such as figure 1 as shown, figure 1 It is a flow chart of the optimal well pattern layout method for recyclable use of sandstone heat storage and geothermal resources of the present invention.

[0029] In step 101, a geothermal geological model is established. Using existing drilling, well logging, mud logging, and seismic data, a geothermal geological model is established on the basis of clarifying the lithology, thickness, distribution range, boundary conditions, and heat source of the geological structure, heat reservoir, and caprock in the study area, such as figure 2 It includes the geological structure of the top and bottom of the thermal reservoir, the lithology, thickness, distribution range and boundary conditions of the thermal rese...

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Abstract

The invention provides a sandstone thermal storage geothermal resource recycle utilization optimal well network layout method. The method comprises the steps that 1, a geothermal geological model anda geothermal numerical model are built; 2, the single well water yield is calculated according to an analytical method, correction is conducted by applying an internal geothermal water sampling well,and a water yield calculation formula suitable for a research area is established; 3, the research area geothermal utilization resource requirements are determined, and the optimal water sampling well, the rate of the recharge well number, the water sampling well number and the recharge well number are determined in combination with the recharge condition; 4, according to the fact that by means ofthe age limit, single well water sampling and recharge temperature field and pressure field numerical simulation are conducted, it is determined that temperatures and pressure of the water sampling well and the recharge well affect the radius; 5, the optimal well network layout is determined. According to the method, the problems that at present, in domestic geothermal development and utilization, recharge is not thorough, the thermal storage pressure is lowered, and the thermal storage temperature is lowered are solved, the optical well network layout is put forward, and the geothermal resource recycle utilization efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to an optimal well pattern layout method for recyclable utilization of sandstone heat storage and geothermal resources. Background technique [0002] The most important problem in the development and utilization of geothermal resources in sedimentary basins is that the pressure of heat storage decreases with the increase of mining volume and mining time. At the same time, the discharge of geothermal tail water causes thermal pollution to the environment. Recycling is an effective way and an important measure to solve this series of problems. One of the key issues in recyclable utilization of geothermal resources is the optimization of well pattern layout. At present, there are no specific measures for the layout of well patterns for the recycling of geothermal resources in China. irrigation status. For this reason, we have invented a new optimal well pattern layout me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/30G06F17/50
CPCE21B43/30G06F30/00
Inventor 杨永红宋明水赵铭海王永诗尚冰李晓燕张红波黄蓉郗凤琨宋振修刘克奇刘华夏
Owner CHINA PETROLEUM & CHEM CORP
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