公开(公告)号：US20180171754A1

公开(公告)日：2018-06-21

申请号：US15898937

申请日：2018-02-19

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Tove HUSBY ,  Rick D. WATTS ,  Dianne TOMPKINS ,  Helen HANEFERD ,  Lars HOVDA

IPC: E21B36/04 ,  E21B33/13

Abstract: The invention relates to the decommissioning of hydrocarbon wells. It concerns the artificial promoting or inducing of creep in the overburden formation 3 surrounding an oil well 1, so that the formation rock 3 encroaches against the casing 5 to form a seal. This avoids the need to plug the annulus between the casing 5 and formation 3 with cement. The overburden may be caused to creep by reducing the pressure in the annulus, by applying heat to the overburden rock or by stressing the rock repeatedly to cause fatigue in the rock 3.

公开(公告)号：US20160237779A1

公开(公告)日：2016-08-18

申请号：US15042814

申请日：2016-02-12

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Tove HUSBY ,  Rick D. WATTS ,  Dianne TOMPKINS ,  Helen HANEFERD ,  Lars HOVDA

IPC: E21B33/14

CPC classification number: E21B36/04 ,  E21B33/13

Abstract: The invention relates to the decommissioning of hydrocarbon wells. It concerns the artificial promoting or inducing of creep in the overburden formation 3 surrounding an oil well 1, so that the formation rock 3 encroaches against the casing 5 to form a seal. This avoids the need to plug the annulus between the casing 5 and formation 3 with cement. The overburden may be caused to creep by reducing the pressure in the annulus, by applying heat to the overburden rock or by stressing the rock repeatedly to cause fatigue in the rock 3.

Abstract translation: 本发明涉及烃井的退役。 它涉及在围绕油井1的上覆岩层3中的人造促进或诱导蠕变，使得地层岩石3侵入壳体5以形成密封。 这避免了需要用水泥塞住套管5和地层3之间的环空。 可能通过减小环空中的压力，通过向上覆岩层施加热量或通过重复地施加岩石以在岩石3中引起疲劳而使上覆岩层蠕变。