公开(公告)号：US20220412869A1

公开(公告)日：2022-12-29

申请号：US17384244

申请日：2021-07-23

Applicant: Southwest Petroleum University

Inventor： Xiaolong PENG ,  Suyang ZHU ,  Chaowen WANG ,  Peng DENG ,  Chunsheng JIA ,  Dong FEI ,  Haoqiang WU ,  Zeyu YE ,  Si ZHANG

IPC: G01N15/08 ,  G01N33/24

Abstract: The present invention relates to a multi-capillary force curve averaging method based on the overall virtual measurement of a plurality of samples. The method includes the following steps: 1, taking m types of rock samples, obtaining a capillary force-saturation curve, an apparent volume and a porosity of each sample; 2, inspecting the quality of the capillary force-saturation curve of each sample and preprocessing the end points of each curve; 3, calculating an averaged wet phase saturation corresponding to different capillary force values of the plurality of samples under the overall virtual measurement of a plurality of samples; and 4, denoting data points on a graph by using the wet phase saturation as the abscissa and capillary force as the ordinate, and finally connecting all data points smoothly to obtain the averaged capillary force curve. This method of the present invention is reliable in principle and easy to operate, can be directly operated on the capillary force curves, is also suitable for various types of samples with different physical properties in consideration of the influence of the numbers of reservoirs represented by samples, has a wide range of applications, and accurate and convenient calculation results, and is more consistent with actual working conditions.

公开(公告)号：US20240300811A1

公开(公告)日：2024-09-12

申请号：US18589455

申请日：2024-02-28

Applicant: Southwest Petroleum University

Inventor： Chaowen WANG ,  Qunchao DING ,  Liehui ZHANG ,  Chunsheng JIA ,  Xiaolong PENG ,  Yulong ZHAO ,  Suyang ZHU ,  Peng DENG

IPC: C01B3/36

CPC classification number: C01B3/36 ,  C01B2203/0872 ,  C01B2203/1241 ,  C01B2203/1258 ,  C01B2203/1619 ,  C01B2203/1633

Abstract: An experimental simulation device for hydrogen production by in-situ conversion of a gas reservoir comprises a gas source, a plurality of groups of reactors and an analysis monitoring device, wherein the gas source comprises a methane tank, a helium tank, an oxygen tank and a water vapor generator, the gas source can supply gas to the reactors separately, the in-situ hydrogen production is simulated in the reactors; and meanwhile, a use method of the experimental simulation device for hydrogen production by in-situ conversion of the gas reservoir can achieve accurate simulation of the multi-stage in-situ hydrogen production and multi-well group cooperative hydrogen production processes of different types of gas reservoirs in actual production by adjusting connection states of the plurality of groups of reactors. The experimental result in the present invention can be closer to the actual production.

公开(公告)号：US20230151730A1

公开(公告)日：2023-05-18

申请号：US17892153

申请日：2022-08-22

Applicant: Southwest Petroleum University

Inventor： Xiaolong PENG ,  Chaowen WANG ,  Suyang ZHU ,  Peng DENG ,  Chunsheng JIA ,  Dong FEI ,  Haoqiang WU ,  Yi XU ,  Si ZHANG ,  Zeyu YE

IPC: E21B49/00 ,  G06F30/28

CPC classification number: E21B49/00 ,  G06F30/28 ,  G06F2111/10

Abstract: The present invention discloses a method and device for studying fluid equilibrium distribution in heterogeneous oil and gas reservoirs. Firstly, a reservoir is divided into multiple layers according to permeability of the reservoir; a pressure-depth curve of formation water in surrounding rock is established; the pressure-depth curve of a non-wetting phase is made by passing through a point in the reservoir and taking a product of density and acceleration of gravity of the non-wetting phase as a slope; the pressure-depth curve of displacement pressure of the reservoir is added on the basis of the pressure-depth curve of the formation water; and the pressure-depth curve of the non-wetting phase is repeatedly compared with the pressure-depth curve of the displacement pressure to obtain static equilibrium distribution of fluid in the reservoir.

公开(公告)号：US20220010666A1

公开(公告)日：2022-01-13

申请号：US17368199

申请日：2021-07-06

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Xiaolong PENG ,  Suyang ZHU ,  Chaowen WANG ,  Peng DENG ,  Ning FENG ,  Haoqiang WU

IPC: E21B43/30 ,  E21B49/00

Abstract: The invention discloses a method for improving a recovery ratio of a braided well pattern of a hugely thick or multi-layer oil and gas reservoir, which improves the recovery ratio of the hugely thick or multi-layer oil and gas reservoir by designing the braided well pattern. The braided well pattern is designed through the following method: dividing a cubic development unit of the oil and gas reservoir; measuring a physical property parameter of the cubic development unit; calculating a well pattern design parameter according to the physical property parameter, wherein the well pattern design parameter includes a number of wells and a well bore track; and drilling a large-displacement horizontal well according to the well pattern design parameter. The step of dividing the cubic development unit of the oil and gas reservoir specifically includes: obtaining a boundary of the oil and gas reservoir through seismic volume data; obtaining a main layer series of development of the oil and gas reservoir according to a geological model established on the basis of a prospecting parameter; and establishing a cube with a largest volume in the main layer series of development, wherein the cube is the cubic development unit. The invention can effectively improve the recovery ratio of the hugely thick or multi-layer oil and gas reservoir.