公开(公告)号：US20180274326A1

公开(公告)日：2018-09-27

申请号：US15989787

申请日：2018-05-25

申请人： Timothy J. Nedwed ,  Patrick Brant ,  Bill R. Meeks

发明人： Timothy J. Nedwed ,  Patrick Brant ,  Bill R. Meeks

IPC分类号： E21B33/12 ,  E21B33/1295 ,  E21B33/134 ,  E21B33/06 ,  E21B33/047 ,  E21B33/035 ,  C08G61/08 ,  C08G77/18 ,  B01J31/22

CPC分类号： E21B33/1208 ,  B01J31/2278 ,  B01J2231/543 ,  B01J2531/821 ,  C08G61/08 ,  C08G77/18 ,  C08G2261/135 ,  C08G2261/3324 ,  C08G2261/3325 ,  C08G2261/418 ,  C08K5/5415 ,  C08L83/04 ,  E21B33/0355 ,  E21B33/047 ,  E21B33/06 ,  E21B33/1295 ,  E21B33/134 ,  C08L65/00

摘要： Apparatus, compositions, and methods for creating polymer plugs in wellbores and/or for enhancing wellbore stability, comprising: a flow control device such as a blowout preventer on a wellbore; a control fluid aperture fluidly connected with the wellbore for introducing a control fluid and/or a plug-forming agent such as a polymer, monomer, resinous, and/or crosslinkable material, through a control fluid aperture and into the primary throughbore while wellbore blowout fluid flows through the wellbore; and optionally, a weighted fluid aperture positioned in the wellbore conduit below the control fluid aperture for introducing a weighted fluid or another fluid or plug-forming agent into the wellbore. Exemplary plug-forming agents include dicyclopentadiene and norborene, and exemplary catalysts include Grubbs catalysts. The polymer plugs also may be utilized to hydraulic sealing within wellbores, such as during P&A and drilling operations for providing wellbore stability.

公开(公告)号：US11035195B2

公开(公告)日：2021-06-15

申请号：US16189586

申请日：2018-11-13

申请人： Bill R. Meeks ,  Timothy J. Nedwed ,  Douglas A. Mitchell ,  Rachna Jain ,  Kaustubh S. Kulkarni

发明人： Bill R. Meeks ,  Timothy J. Nedwed ,  Douglas A. Mitchell ,  Rachna Jain ,  Kaustubh S. Kulkarni

IPC分类号： E21B33/12 ,  E21B21/00 ,  E21B33/138 ,  E21B33/10 ,  C09K8/44 ,  C09K8/42 ,  E21B33/134

摘要： Methods of mitigating lost circulation while drilling a wellbore. The methods include circulating a drilling mud to a downhole end of the wellbore via a drill string and, during the circulating, drilling the wellbore with a drill bit of the drill string. The methods also include detecting lost circulation within the wellbore while drilling the wellbore and include providing a monomer solution to the wellbore. The methods further include providing a catalyst to the wellbore responsive to detecting the lost circulation event and combining the monomer solution and the catalyst to polymerize a monomer from the monomer solution, within the wellbore, and forming a viscous plug within the wellbore. Subsequent to the combining, the methods include flowing at least a portion of the viscous plug within the wellbore and into a zone of lost circulation that extends within a subsurface region. The methods further include at least partially occluding fluid flow from the wellbore and into the zone of lost circulation with the viscous plug.

公开(公告)号：US20190186231A1

公开(公告)日：2019-06-20

申请号：US16189586

申请日：2018-11-13

申请人： Bill R. Meeks ,  Timothy J. Nedwed ,  Douglas A. Mitchell ,  Rachna Jain ,  Kaustubh S. Kulkarni

发明人： Bill R. Meeks ,  Timothy J. Nedwed ,  Douglas A. Mitchell ,  Rachna Jain ,  Kaustubh S. Kulkarni

IPC分类号： E21B33/12 ,  E21B33/134

CPC分类号： E21B33/1208 ,  C09K8/426 ,  C09K8/44 ,  E21B33/134

摘要： Methods of mitigating lost circulation while drilling a wellbore. The methods include circulating a drilling mud to a downhole end of the wellbore via a drill string and, during the circulating, drilling the wellbore with a drill bit of the drill string. The methods also include detecting lost circulation within the wellbore while drilling the wellbore and include providing a monomer solution to the wellbore. The methods further include providing a catalyst to the wellbore responsive to detecting the lost circulation event and combining the monomer solution and the catalyst to polymerize a monomer from the monomer solution, within the wellbore, and forming a viscous plug within the wellbore. Subsequent to the combining, the methods include flowing at least a portion of the viscous plug within the wellbore and into a zone of lost circulation that extends within a subsurface region. The methods further include at least partially occluding fluid flow from the wellbore and into the zone of lost circulation with the viscous plug.