公开(公告)号：US11634961B2

公开(公告)日：2023-04-25

申请号：US17039909

申请日：2020-09-30

Applicant: PetroChina Company Limited

Inventor： Xiaowei Xue ,  Jianguo Yao ,  Zhiguo Wang ,  Guofu Ren ,  Xiangjun Hu ,  Siwen Guo ,  Minqi Zhao ,  Changqing Feng ,  Kai Li ,  Penggang Huang

IPC: E21B23/01 ,  E21B33/12 ,  E21B23/06 ,  E21B33/129

Abstract: A metal-based dissolvable ball seat comprises a mandrel, a tail base, a sliding body, a slip and a sealing ring. The mandrel can be disengaged from the tail base under predefined shearing force. The sliding body is disposed to sleeve the mandrel and located above the tail base; the slip is disposed outside the mandrel and slidably abutted against the tail base and the sliding body respectively; the slip and the sliding body are slidably abutted against each other through a first conical surface structure, and/or the slip and the tail base are slidably abutted against each other through a second conical surface structure; the sealing ring is movable along axial direction of the mandrel together with the slip; when the sliding body and the tail base are approaching each other, the slip opens up and the sealing ring expands outward. A setting system and a setting method are provided.

公开(公告)号：US20230028649A1

公开(公告)日：2023-01-26

申请号：US17934750

申请日：2022-09-23

Applicant: PETROCHINA COMPANY LIMITED

Inventor： Jiahuan HE ,  Lurui DANG ,  Keming ZHOU ,  Cheng LEI ,  Mei HUANG ,  Jintao ZHANG ,  Bo KONG

IPC: G01V3/18 ,  G01V3/38

Abstract: The present disclosure provides a device and methods for determining the original stratum direction of a core. The device includes a confining pressure pump, a resistance meter, and a core holder composed of upper and lower portions. The present disclosure further provides three methods for determining the original stratum direction of the core. The three methods respectively use the device to measure resistance values at different positions of the core, and compare a test result with an imaging result of resistivity imaging logging data to determine the rock direction of the core in a stratum.

公开(公告)号：US11298693B2

公开(公告)日：2022-04-12

申请号：US16446454

申请日：2019-06-19

Applicant: PETROCHINA COMPANY LIMITED

Inventor： Buwei Yu ,  Tao Jiang ,  Sihan Wang ,  Hongling Chu ,  Yan Jiang ,  Hongliang Huo ,  Xianming Xu ,  Libo Wang ,  Huaiqi Shao ,  Yali Wang ,  Yuanyuan Cao ,  Tong Liu ,  Kecun Ma ,  Fuling Huang ,  Xiuhui Wang ,  Enhao Sun ,  Yulong Wang

IPC: B01J31/18 ,  B01J31/12 ,  B01J31/14 ,  B01J31/34 ,  B01J31/36 ,  B01J31/38 ,  C07C2/32

Abstract: The present disclosure provides a method and a catalyst for selective oligomerization of ethylene. The raw material for the catalyst consists of a dehydropyridine annulene-type ligand, a transition metal compound, and an organometallic compound in a molar ratio of 1:0.5-100:0.1-5000. The present disclosure also provides a method for selective oligomerization of ethylene accomplished by using the above-mentioned catalyst. The catalyst for selective oligomerization of ethylene has high catalytic activity, high selectivity for the target products 1-hexene and 1-octene, and low selectivity for 1-butene and 1-C10+.

公开(公告)号：US20210372280A1

公开(公告)日：2021-12-02

申请号：US17253457

申请日：2020-02-24

Applicant: PetroChina Company Limited

Inventor： Lianhua Hou ,  Jinghong Wang ,  Weijie Hou ,  Ziyun Zhang ,  Futai Jing

IPC: E21B49/00 ,  E21B43/16 ,  E21B47/022

Abstract: The invention provides a method and an apparatus for determining an integrated exploitation approach for a shale and adjacent oil reservoirs. The method includes: determining a thickness of an effective shale, a top effective boundary and a bottom effective boundary of adjacent effective oil reservoirs; determining a maximum seepage radius of each of the adjacent effective oil reservoirs to the effective shale; determining a well pattern; determining a well completion approach; and determining a total number of perforation clusters of gas injection wells, a number of perforation clusters corresponding to each of the adjacent effective oil reservoirs, a gas injection amount per unit time of each of the perforation clusters, and a total gas injection amount per unit time of the gas injection wells. The effective shale is in communication with all the adjacent effective oil reservoirs by boring-through of a fluctuating horizontal well or a vertical well.

公开(公告)号：US20210355822A1

公开(公告)日：2021-11-18

申请号：US16470539

申请日：2018-12-10

Applicant: PETROCHINA COMPANY LIMITED

Inventor： Hongliang WU ,  Ning LI ,  Zhou FENG ,  Changlin LAN ,  Tao LV ,  Kewen WANG ,  Qingfu FENG

IPC: E21B49/00 ,  G01V5/10

Abstract: A gamma ray spectrum unfolding method for elemental capture spectroscopy logging and a device therefor including the steps of first preprocessing the data obtained from an elemental capture spectrometry instrument; constructing a primary element group and an auxiliary element group according to the degree of interactions among the elements via theoretical analysis and numerical calculation of spectrum profiles, characteristic peak channels, and backgrounds of different elements; unfolding by using the least square method based on the construction of the primary element group and the auxiliary element group; and finally reconstructing the spectrum based on theory according to the yield of each element obtained by unfolding with the least square method, and comparing the measured gamma ray spectrum with the reconstructed gamma ray spectrum for error control, thereby improving the spectrum unfolding precision.

公开(公告)号：US11175422B2

公开(公告)日：2021-11-16

申请号：US16023226

申请日：2018-06-29

Applicant: PetroChina Company Limited

Inventor： Yongqiang Qu ,  Jianguo Pan ,  Lu Yin ,  Guodong Wang ,  Duonian Xu ,  Tuanyu Teng ,  Bin Wang ,  Jianhua Qu ,  Dezi Li ,  Linjun Huang ,  Yongping Ma ,  Xuezhen Chen

IPC: G01V1/30 ,  E21B49/00 ,  G01V1/28

Abstract: Identifying a low permeable conglomerate diagenetic trap can be implemented according to a method that comprises: determining a first relation curve between a depth and a critical physical property of a known diagenetic trap in a target work area, and a second relation curve between a reservoir physical property of the known diagenetic trap and a designated seismic attribute; determining a third relation curve between the depth and the critical physical property in the target work area and the designated seismic attribute according to the first relation curve and the second relation curve; and performing a diagenetic trap identification of the target work area according to the third relation curve. Identification accuracy of a low permeable conglomerate diagenetic trap can thereby be improved.

公开(公告)号：US11142716B2

公开(公告)日：2021-10-12

申请号：US16650942

申请日：2019-04-12

Applicant: PetroChina Company Limited

Inventor： Xuesheng Hu ,  Fei Gao ,  Shengbao He ,  Yingwen Li ,  Xiao Li ,  Ming Fan ,  Weigang Dong ,  Jing Chen ,  Wei Li ,  Qing Hu ,  Yuan Wang ,  Huaqun Zhou

IPC: C10G19/08 ,  C10L3/10 ,  C10L3/12 ,  C10G19/06 ,  C10G27/06

Abstract: A regeneration method for a liquefied gas thiol-removing alkaline solution comprising the following steps: performing an oxygenation reaction with respect to a liquefied gas thiol-removing alkaline solution and, at the same time, utilizing a high air-liquid condition to extract a disulfide and a polysulfide into a gas phase, thus completing the separation of the disulfide and the polysulfide from the alkaline solution, and implementing the regeneration of the liquefied gas thiol-removing alkaline solution.

公开(公告)号：US11112398B2

公开(公告)日：2021-09-07

申请号：US16207055

申请日：2018-11-30

Applicant: PetroChina Company Limited

Inventor： Fuyun Wang ,  Youzhi Zheng ,  Jie Li ,  Huiyun Ma ,  Libin Jiao ,  Tao Yang ,  Jiang Yu ,  Qiyan Tan

IPC: G01N33/38 ,  G01N3/18 ,  E21B33/14 ,  E21B47/005

Abstract: An apparatus and method for determining a volume stability of well cement including a reaction kettle, a radial contraction, an expansion ring, a heater, a pressurizer, and a volume change parameter tester. The radial contraction and expansion ring include a first casing and a second casing, the first casing is a casing made of elastic material, the second casing is a steel casing, and the first casing sheathes the second casing. The heater and the pressurizer are used to provide a preset temperature and a preset pressure respectively and the volume change parameter tester is used to detect a radial volume change parameter of the well cement. The apparatus is provided with the radial contraction and expansion ring to acquire the radial volume change parameter of the well cement, and comprehensively evaluates the volume stability of the well cement using the radial volume change parameter of the well cement.

公开(公告)号：US11084024B2

公开(公告)日：2021-08-10

申请号：US15750398

申请日：2016-08-04

Applicant: PetroChina Company Limited

Inventor： Shuhong Sun ,  Xiaoliang Huang ,  Haitao Zhang ,  Gengzhen Cao ,  Yunfeng Zheng ,  Lin Wang ,  Zhishuang Pan ,  Zhengguo Tan ,  Yahong Wang ,  Jinjun Cai ,  Hongchang Duan ,  Xueli Li ,  Chengyuan Yuan ,  Dong Wang

IPC: B01J29/40 ,  B01J29/06 ,  B01J21/04 ,  B01J21/08 ,  B01J21/12 ,  B01J21/16 ,  B01J29/00 ,  B01J29/08 ,  B01J37/03 ,  B01J37/08 ,  C10G11/05 ,  C10G11/18 ,  B01J37/00 ,  B01J37/02 ,  B01J37/04

Abstract: The invention relates to a molecular sieve modification method and a catalytic cracking catalyst containing a molecular sieve. The method comprises: mixing a solution containing an ion of a Group MB metal in the periodic table, an organic complexing agent, and/or a dispersant and a precipitation agent, and stirring the same to form a suspension containing a precipitant of a Group IIIB element; and mixing the resulting precipitant and a molecular sieve slurry, stirring the same to obtain a mixed slurry containing the precipitant of the Group MB element and a molecular sieve, and performing spray drying and optional calcination, to obtain a modified molecular sieve. The catalyst comprises, as calculated based on the catalyst mass being 100%, 10-55% of a modified molecular sieve (on a dry basis), 10-80% of clay (on a dry basis), 0-40% of an inorganic oxide (on an oxide basis), and 5-40% of a binding agent (on an oxide basis). The catalyst has good activity stability and heavy metal contamination resistance.

公开(公告)号：US11003952B2

公开(公告)日：2021-05-11

申请号：US16506891

申请日：2019-07-09

Applicant: PetroChina Company Limited

Inventor： Zhou Feng ,  Hongliang Wu ,  Ning Li ,  Kewen Wang ,  Peng Liu ,  Yusheng Li ,  Huafeng Wang ,  Binsen Xu

IPC: G06K9/00 ,  G06K9/62 ,  G06N3/08 ,  G06N3/04 ,  G01V3/20 ,  G01V3/38 ,  G06K9/36

Abstract: A method and an apparatus for automatically recognizing an electrical imaging well logging facies, wherein the method comprises: acquiring historical data of electrical imaging well logging; pre-processing the historical data of the electrical imaging well logging to generate an electrical imaging well logging image covering a full hole; recognizing a typical imaging well logging facies in the electrical imaging well logging image covering the full hole, and determining the electrical imaging well logging image covering the full hole as a training sample in accordance with a category of the imaging well logging facies; constructing a deep learning model including an input layer, a plurality of hidden layers, and an output layer; training the deep learning model using the training sample to obtain a trained deep learning model; and recognizing the well logging facies of the electrical imaging well logging image of the well section to be recognized using the trained deep learning model.