Title:
METHOD AND SYSTEM FOR MANAGED PRESSURE WELL CEMENTING BASED ON DEEP WELLBORE CEMENT SLURRY SYSTEM SIMULATION
Document Type and Number:
WIPO Patent Application WO/2022/105945
Kind Code:
A1
Abstract:
A method and system for managed pressure well cementing based on deep wellbore cement slurry system simulation. The method comprises the following steps: simulating a hydration reaction of wellbore cement slurry on the basis of basic data and well cementing data of an operating well; calculating in real time the bottom hole pressure in a well cementing process on the basis of the simulation; and adjusting the amount of opening of a choke manifold in order to control wellhead back pressure, such that formation pore pressure < bottom hole pressure < formation fracture pressure. The system comprises a computer-readable medium having a preset program stored thereon, the above method being able to be implemented when the preset program is executed. Bottom hole pressure can be calculated in real time by means of simulating physical or chemical reaction processes of a cement slurry system in a well cementing process, and wellhead pressure is controlled by means of adjusting a choke manifold, such that the bottom hole pressure is constantly maintained in the safe operation window range for a formation, thus preventing the occurrence of complex accidents such as well kicks, gas channeling, or leakage.
Inventors:
WANG XUERUI (CN)
SUN BAOJIANG (CN)
WANG ZHIYUAN (CN)
MA JINSHAN (CN)
QI JINTAO (CN)
XI FENGLIANG (CN)
ZHAO SHUXUN (CN)
LIN ZHIHUI (CN)
FU JIAWEN (CN)
SUN BAOJIANG (CN)
WANG ZHIYUAN (CN)
MA JINSHAN (CN)
QI JINTAO (CN)
XI FENGLIANG (CN)
ZHAO SHUXUN (CN)
LIN ZHIHUI (CN)
FU JIAWEN (CN)
Application Number:
PCT/CN2022/072468
Publication Date:
May 27, 2022
Filing Date:
January 18, 2022
Export Citation:
Assignee:
UNIV CHINA PETROLEUM EAST CHINA (CN)
DRILLING TECH SERVICE BRANCH OF CNPC BOHAI DRILLING ENGINEERING CO LTD (CN)
SECOND CEMENTING BRANCH OF CNPC BOHAI DRILLING ENG CO LTD (CN)
DRILLING TECH SERVICE BRANCH OF CNPC BOHAI DRILLING ENGINEERING CO LTD (CN)
SECOND CEMENTING BRANCH OF CNPC BOHAI DRILLING ENG CO LTD (CN)
International Classes:
G06F30/28; E21B33/13; G06F113/08; G06F119/14
Foreign References:
| CN112417778A | 2021-02-26 | |||
| CN106285554A | 2017-01-04 | |||
| CN108119074A | 2018-06-05 | |||
| CN111396025A | 2020-07-10 | |||
| CN108222865A | 2018-06-29 | |||
| CN101710468A | 2010-05-19 | |||
| US20040065440A1 | 2004-04-08 |
Other References:
SUN, BAOJIANG, SHI YOU ZUAN TAN JI SHU: "Research Development and Outlook for Managed Pressure Cementing Technology", PETROLEUM DRILLING TECHNIQUES, vol. 47, no. 3, 1 January 2019 (2019-01-01), pages 56 - 61, XP055931391, ISSN: 1001-0890, DOI: 10.11911/syztjs.2019066
Attorney, Agent or Firm:
BEIJING FINELAND IP FIRM (CN)
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