利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

604 条记录 (耗时 0.019 秒)

    Measuring drilling fluid pH with smart polymers
    1.
    发明授权
    Measuring drilling fluid pH with smart polymers 有权

    公开(公告)号：US12031430B2

    公开(公告)日：2024-07-09

    申请号：US17959408

    申请日：2022-10-04

    申请人： Saudi Arabian Oil Company

    发明人： Mohammed Albassam ,  Arturo Magana Mora ,  Chinthaka Pasan Gooneratne ,  Mohammad Aljubran ,  Peter Boul

    IPC分类号： E21B49/08 ,  C09K8/24 ,  G01N33/24

    CPC分类号： E21B49/0875 ,  C09K8/24 ,  G01N33/24

    摘要： Systems and methods include techniques for using smart polymers. Units of smart polymers with per-hydrogen (pH) sensitivity are inserted into drilling fluid pumped into a well during drilling. The smart polymers are configured to be triggered by hydrogen ion concentrations. An insertion timestamp associated with each unit is stored and indicates a time that each unit was inserted. Continuous images and observed characteristics of returning mud exiting through an annulus of the well and containing the units of smart polymer are captured by a camera positioned at a sensing location and linked to the monitoring system. An estimate of pH values at a drill bit of the drilling operation is determined using the continuous images, observed characteristics, and insertion timestamps, and based at least in part on executing image processing algorithms, machine-learning models, and deep-learning models. Changes to be made to drilling parameters are suggested.

    PERMANGANATE BASED HYDROGEN SULFIDE SCAVENGING DRILLING FLUID
    3.
    发明公开
    PERMANGANATE BASED HYDROGEN SULFIDE SCAVENGING DRILLING FLUID 审中-公开

    公开(公告)号：US20230383165A1

    公开(公告)日：2023-11-30

    申请号：US17938778

    申请日：2022-10-07

    申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

    发明人： Sagheer A. ONAIZI

    IPC分类号： C09K8/24 ,  C09K8/16 ,  C09K8/14

    CPC分类号： C09K8/24 ,  C09K8/16 ,  C09K8/145

    摘要： A method of drilling a subterranean geological formation is described. The method includes driving a drill bit to form a wellbore into the subterranean geological formation thereby producing a formation fluid including hydrogen sulfide (H2S). The method includes injecting a drilling fluid into the subterranean geological formation through the wellbore. The drilling fluid composition includes 0.25 to 2 wt. % of a primary H2S scavenger which is potassium permanganate. The drilling fluid composition includes an invert emulsion which includes a continuous phase including mineral oil and a dispersive phase including water. The potassium permanganate present in the drilling fluid composition reacts with the H2S present in the formation fluid to produce a dispersion of manganese-containing particles which are at least one selected from the group consisting of manganese sulfide and manganese sulfate.

    RESERVOIR PROTECTING AGENT COMPOSITION FOR RESERVOIR WITH CRACKS, DRILLING FLUID CONTAINING THE SAME AND USE THEREOF
    8.
    发明申请
    RESERVOIR PROTECTING AGENT COMPOSITION FOR RESERVOIR WITH CRACKS, DRILLING FLUID CONTAINING THE SAME AND USE THEREOF 审中-公开

    公开(公告)号：US20180118993A1

    公开(公告)日：2018-05-03

    申请号：US15400672

    申请日：2017-01-06

    申请人： China University of Petroleum (East China)

    发明人： Kaihe LV ,  Jinsheng SUN ,  Jingping LIU

    IPC分类号： C09K8/24 ,  E21B21/00 ,  E21B33/138

    CPC分类号： C09K8/24 ,  C09K2208/08 ,  E21B21/003 ,  E21B33/138

    摘要： The present invention relates to the technical field of petroleum drilling, discloses a reservoir protecting agent composition for reservoir with cracks, a drilling fluid containing the same and use thereof. The reservoir protecting agent composition contains an elastic polymer particle, and at least one of a synthetic fiber and a film-forming agent; the elastic polymer particle contains an intermediate product, base, salt and water with specific amounts; and the intermediate product is made of raw materials comprising acrylamide, a cationic monomer, a cross-linking agent, an initiator, a toughening material and water with specific amounts. The reservoir protecting agent composition of the present invention can effectively prevent the drilling fluid from invading the reservoir with cracks, and rapidly block off cracks in the reservoir with cracks. The reservoir protecting agent composition has a high blocking rate and the blocking layer is easily flowback and has advantages such as easy use, good environmental protection performances, and good protection performances for the reservoir.

    Gellable treatment fluids with clay-based gel retarders and related methods
    10.
    发明授权
    Gellable treatment fluids with clay-based gel retarders and related methods 有权

    公开(公告)号：US09869156B2

    公开(公告)日：2018-01-16

    申请号：US14380281

    申请日：2013-10-22

    申请人： Halliburton Energy Services, Inc.

    发明人： B. Raghava Reddy ,  Larry Eoff ,  Natalie Pascarella

    IPC分类号： E21B33/138 ,  E21B43/04 ,  E21B43/16 ,  C09K8/512 ,  C09K8/24

    CPC分类号： E21B33/138 ,  C09K8/24 ,  C09K8/512 ,  C09K2208/10 ,  E21B43/04 ,  E21B43/16

    摘要： Clay-based retarders may be useful in delaying the gel time of a gellable treatment fluid and, consequently, subterranean operations. For example, a method may involve providing a gellable treatment fluid comprising: an aqueous base fluid; a base polymer comprising an acrylamide monomer unit; a polymeric organic crosslinking agent comprising a crosslinkable polymer selected from the group consisting of polyethyleneimine, polyvinylamine, chitosan, any derivative thereof, any salt thereof, and any combination thereof; and a clay-based gel retarder; introducing the gellable treatment fluid into a wellbore penetrating a subterranean formation; and forming a gel with the gellable treatment fluid in at least a portion of the wellbore, at least a portion of the subterranean formation, or both. In some instances, producing the gellable treatment fluid may involve not pre-hydrating the clay-based gel retarder. In some instances, the gellable treatment fluid may not be thixotropic or pseudoplastic before introduction into the wellbore.