Drilling head with non-rotating annular seal assembly
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-033/03
E21B-033/06
E21B-033/08
출원번호
US-0221940
(2016-07-28)
등록번호
US-10190378
(2019-01-29)
발명자
/ 주소
Alajbegovic, Vahidin
Ring, Lev
출원인 / 주소
Weatherford Technology Holdings, LLC
대리인 / 주소
Smith IP Services, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
1
초록▼
A drilling head can include an annular seal assembly releasably secured in an outer housing, the annular seal assembly including an annular seal and an actuator that pressurizes a lubricant for delivery to an interior of the annular seal. A method can include positioning an annular seal in a drillin
A drilling head can include an annular seal assembly releasably secured in an outer housing, the annular seal assembly including an annular seal and an actuator that pressurizes a lubricant for delivery to an interior of the annular seal. A method can include positioning an annular seal in a drilling head, the annular seal including an inner liner having openings formed through a sidewall of the inner liner, and flowing a lubricant into an opening while the inner liner sealingly engages a tubular. In another method, the annular seal can have a minimum inner diameter for sealing engagement with a tubular, and a lubricant passage extending through the annular seal and intersecting an interior of the annular seal at a location spaced apart from the minimum inner diameter. A lubricant is flowed through the lubricant passage to the interior of the annular seal.
대표청구항▼
1. A drilling head for use with a subterranean well, the drilling head comprising: an outer housing; andan annular seal assembly releasably secured in the outer housing, the annular seal assembly including:at least one annular seal, andan actuator that pressurizes a lubricant for delivery to an inte
1. A drilling head for use with a subterranean well, the drilling head comprising: an outer housing; andan annular seal assembly releasably secured in the outer housing, the annular seal assembly including:at least one annular seal, andan actuator that pressurizes a lubricant for delivery to an interior of the annular seal, wherein the actuator is positioned in the annular seal assembly. 2. The drilling head of claim 1, wherein the actuator is in fluid communication with a lubricant passage extending through an inner liner of the annular seal. 3. The drilling head of claim 1, wherein the annular seal includes an inner liner surrounded by an outer body. 4. The drilling head of claim 3, wherein the inner liner comprises a plastic material, and wherein the outer body comprises an elastomeric material. 5. The drilling head of claim 3, wherein multiple openings are formed through a sidewall of the inner liner, and wherein a lubricant passage is in fluid communication with at least one of the openings. 6. The drilling head of claim 3, wherein a lubricant passage extends through the inner liner and intersects the interior of the annular seal at a location spaced apart from a minimum inner diameter of the inner liner. 7. The drilling head of claim 6, further comprising a tubular sealingly engaged by the inner liner and extending longitudinally through the inner liner, the tubular having an external helical profile adjacent the location. 8. The drilling head of claim 1, wherein the actuator comprises at least one of the group consisting of a pump and an accumulator. 9. The drilling head of claim 1, wherein the actuator pressurizes the lubricant in response to fluid pressure in an interior of the outer housing below the annular seal. 10. The drilling head of claim 1, further comprising a latch assembly that releasably secures the annular seal assembly, including the annular seal and the actuator, in the outer housing, with relative rotation between the annular seal and the outer housing being prevented. 11. A method, comprising: positioning an annular seal in a drilling head, the annular seal including an inner liner which is configured to sealingly engage a tubular extending longitudinally through the drilling head, the inner liner having multiple openings formed through a sidewall of the inner liner, wherein at least two of the openings are circumferentially spaced apart along the sidewall;flowing a lubricant into at least one of the openings while the inner liner sealingly engages the tubular; andthe openings laterally stretching in response to radial expansion of the inner liner. 12. The method of claim 11, wherein the flowing comprises flowing the lubricant from a lubricant reservoir and through a lubricant passage in the inner liner. 13. The method of claim 12, wherein the lubricant reservoir and the annular seal are included in an annular seal assembly, and wherein the positioning comprises releasably securing the annular seal assembly in an outer housing of the drilling head. 14. The method of claim 13, further comprising retrieving the annular seal assembly, including the annular seal and the lubricant reservoir, from the outer housing. 15. The method of claim 14, wherein the flowing further comprises an actuator pressurizing the lubricant for delivery to the lubricant passage, and wherein the retrieving comprises retrieving the annular seal assembly, including the actuator, from the outer housing. 16. A method, comprising: positioning an annular seal in an outer housing of a drilling head, the annular seal having a minimum inner diameter for sealing engagement with a tubular, and including a lubricant passage extending through the annular seal and intersecting an interior of the annular seal at a location spaced apart from the minimum inner diameter;flowing a lubricant through the lubricant passage to the interior of the annular seal; androtating the tubular relative to the annular seal, thereby conveying the lubricant from the location to a contact interface between the annular seal and the tubular,wherein the tubular includes an external helical profile, and wherein the conveying comprises displacing the lubricant with the helical profile to the contact interface. 17. The method of claim 16, wherein the annular seal comprises an inner liner surrounded by an outer body, and wherein the lubricant passage extends through the inner liner. 18. The method of claim 16, wherein an annular seal assembly includes the annular seal and a lubricant reservoir, and further comprising retrieving the annular seal assembly, including the annular seal and the lubricant reservoir, from the outer housing.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (1)
Iff Rene (Bern CHX), Stem and disc seal construction for butterfly valves.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.