Systems and methods for assembling a blowout preventer

{
  "publication_number": "US10100597B2",
  "country": "US",
  "kind": "B2",
  "title": "Systems and methods for assembling a blowout preventer",
  "abstract": "A blowout preventer including a top including a chamber and an annular groove extending into a surface of the top, a housing including a chamber and an annular groove extending into a surface of the housing, and a connection assembly configured to releasably couple the top to the housing, the connection assembly including an arcuate ring segment having a radial width that is greater in size than an axial height of the ring segment, and a positioner configured to radially displace the ring segment between a locked position restricting relative axial movement between the top and the housing, and an unlocked position allowing for relative axial movement between the top and the housing.",
  "claims": [
    "1. A blowout preventer, comprising: a top comprising a chamber and an annular groove extending into a surface of the top, the chamber of the top configured to receive at least a portion of a packer; a housing comprising a chamber and an annular groove extending into a surface of the housing, the chamber of the housing configured to receive at least portion of an actuation assembly configured to actuate the packer to seal a bore of the blowout preventer; and a connection assembly configured to releasably couple the top to the housing, the connection assembly comprising: a plurality of arcuate ring segments, each arcuate ring segment having a radial width that is greater in size than an axial height of the ring segment; and a plurality of positioners, each positioner configured to radially displace the ring segment between a locked position restricting relative axial movement between the top and the housing, and an unlocked position allowing for relative axial movement between the top and the housing; wherein, when the arcuate ring segment is disposed in the locked position, the arcuate ring segment is disposed in the annular groove of the top and the annular groove of the housing; and wherein each of the plurality of arcuate ring segments comprises a pair of lateral end surfaces; and when the plurality of arcuate ring segments are disposed in the locked position, the lateral end surfaces of each arcuate ring segment engages a lateral end surface of an adjacently positioned arcuate ring segment.",
    "2. The blowout preventer of claim 1, wherein: the annular groove of the housing extends 360° about a longitudinal axis of the housing; and the annular groove of the top extends 360° about a longitudinal axis of the top.",
    "3. The blowout preventer of claim 1, wherein, when the ring segment is disposed in the unlocked position, the ring segment is disposed entirely within the annular groove of the top.",
    "4. The blowout preventer of claim 1, wherein the positioner comprises a threaded fastener disposed in a radially extending aperture of the arcuate ring segment.",
    "5. The blowout preventer of claim 4, wherein: the threaded fastener threadably engages an inner surface of an aperture extending radially into the top; and in response to rotation of the threaded fastener, the arcuate ring segment is actuated between the locked and unlocked positions.",
    "6. The blowout preventer of claim 1, further comprising: an alignment member extending into the annular groove of the top; wherein the alignment member extends into an alignment groove of the ring segment to restrict relative rotation between the ring segment and the housing.",
    "7. The blowout preventer of claim 1, wherein the plurality of positioners are configured to radially displace the ring segments between the locked position and the unlocked position; and wherein, when the plurality of arcuate ring segments are disposed in the locked position, the plurality of arcuate ring segments cover a majority of a circumferential length of an annular interface disposed radially between the top and the housing.",
    "8. A blowout preventer, comprising: a top comprising a chamber and an annular groove extending into a surface of the top, the chamber of the top configured to receive at least a portion of a packer; a housing comprising a chamber and an annular groove extending into a surface of the housing, the chamber of the housing configured to receive at least portion of an actuation assembly configured to actuate the packer to seal a bore of the blowout preventer; and a connection assembly configured to releasably couple the top to the housing, the connection assembly comprising: a plurality of arcuate ring segments, each of the plurality of arcuate ring segments comprising a pair of lateral end surfaces; and a plurality of positioners configured to radially displace the ring segments between a locked position restricting relative axial movement between the top and the housing, and an unlocked position allowing for relative axial movement between the top and the housing; wherein, when the plurality of arcuate ring segments are disposed in the locked position, the plurality of arcuate ring segments cover a majority of a circumferential length of an annular interface disposed radially between the top and the housing and the lateral end surfaces of each arcuate ring segment engages a lateral end surface of an adjacently positioned arcuate ring segment; and wherein, when the plurality of arcuate ring segments are disposed in the locked position, the plurality of arcuate ring segments are disposed in the annular groove of the top and the annular groove of the housing.",
    "9. The blowout preventer of claim 8, wherein, when the plurality of arcuate ring segments are disposed in the locked position, the plurality of arcuate ring segments cover the substantial entirety of the circumferential length of the annular interface disposed radially between the top and the housing.",
    "10. The blowout preventer of claim 8, wherein: each of the plurality of arcuate ring segments comprises an annular upper surface and an annular lower surface; and when the plurality of arcuate ring segments are disposed in the locked position, in response to a first axially directed force applied against the top, the annular lower surface of each of the plurality of ring segment engages an annular lower surface of the annular groove of the top to restrict relative axial movement between the top and the housing.",
    "11. The blowout preventer of claim 10, wherein, when the plurality of arcuate ring segments are disposed in the locked position, in response to the first axially directed force applied against the top, the annular upper surface of each of the plurality of ring segment engages an annular upper surface of the annular groove of the housing to restrict relative axial movement between the top and the housing.",
    "12. The blowout preventer of claim 11, wherein, when the plurality of arcuate ring segments are disposed in the locked position, in response to the first axially directed force applied against the top, the first force is circumferentially distributed along a majority of a circumferential length of the upper surface of the annular groove of the housing.",
    "13. The blowout preventer of claim 8, wherein each of the plurality of arcuate ring segments comprises a radial width that is greater in size than an axial height of the ring segment.",
    "14. A blowout preventer, comprising: a top comprising a chamber and an annular groove extending into a surface of the top, the chamber of the top configured to receive at least a portion of a packer; a housing comprising a chamber and an annular groove extending into a surface of the housing, the chamber of the housing configured to receive at least portion of an actuation assembly configured to actuate the packer to seal a bore of the blowout preventer; and a connection assembly configured to releasably couple the top to the housing, the connection assembly comprising: a plurality of arcuate ring segments, each arcuate ring segment comprising an annular upper surface and an annular lower surface; and a plurality of positioners, each positioner configured to radially displace the plurality of arcuate ring segments between a locked position restricting relative axial movement between the top and the housing, and an unlocked position allowing for relative axial movement between the top and the housing; wherein, when the plurality of arcuate ring segments is disposed in the locked position, the plurality of arcuate ring segments is disposed in the annular groove of the top and the annular groove of the housing; wherein, when the plurality of arcuate ring segments is disposed in the locked position, in response to a first axially directed force applied against the top, the annular lower surface of each ring segment engages an annular lower surface of the annular groove of the top to restrict relative axial movement between the top and the housing and the plurality of arcuate ring segments interlock into engagement with each other.",
    "15. The blowout preventer of claim 14, wherein, when the plurality of arcuate ring segments is disposed in the locked position, in response to the first axially directed force applied against the top, the annular upper surface of the ring segment engages an annular upper surface of the annular groove of the housing to restrict relative axial movement between the top and the housing.",
    "16. The blowout preventer of claim 14, wherein, when the plurality of arcuate ring segments is disposed in the locked position, in response to a second axially directed force applied against the top, the annular upper surface of each ring segment engages an annular upper surface of the annular groove of the top.",
    "17. The blowout preventer of claim 16, wherein, when the plurality of arcuate ring segments is disposed in the locked position, in response to the second axially directed force applied against the top, the annular lower surface of each ring segment engages an annular lower surface of the annular groove of the housing.",
    "18. The blowout preventer of claim 14, wherein each arcuate ring segment comprises a radial width that is greater in size than an axial height of the ring segment.",
    "19. The blowout preventer of claim 14, wherein the plurality of positioners is configured to radially displace the plurality of ring segments between the locked position and the unlocked position; wherein, when the plurality of arcuate ring segments are disposed in the locked position, the plurality of arcuate ring segments cover a majority of a circumferential length of an annular interface disposed radially between the top and the housing."
  ],
  "description_excerpt": "Not applicable.\n\nNot applicable.\n\nHydrocarbon drilling systems utilize drilling fluid or mud for drilling a wellbore in a subterranean earthen formation. In some applications, drilling systems include a blowout preventer (BOP) configured to control the inlet and outlet of fluid from the wellbore, and particularly, to confine well fluid in the wellbore in response to a “kick” or rapid influx of formation fluid into the wellbore. An individual BOP stack may include both ram BOPs and annular BOPs. Annular BOPs are configured to close or seal against the outer surface of a drill string extending through the BOP stack.\n\nIn some applications, annular BOPs include a hydraulic assembly or package for actuating between an open position allowing for fluid flow in an annulus disposed between the drill string and the annular BOP, and a closed position restricting fluid flow through the annulus. Particularly, the hydraulic package may include an annular packer comprising an elastomeric material that is urged into sealing engagement with the drill string. In some applications, the annular BOP includes an upper housing or top for housing the packer, where the top is releasably coupled to a lower housing to allow for the installation of the hydraulic package therein. In those applications, the annular BOP may include a connection assembly for releasably coupling the top to the lower housing, where the connection assembly is configured to transmit loads applied to the top by the packer, when actuated, to the lower housing.",
  "cpc": [
    "E21B 33/06",
    "F16B 2/065",
    "F16B 35/005",
    "F16B 9/02",
    "F16B 9/023",
    "Y10T 403/7041"
  ],
  "ipc": [
    "E21B 33/06",
    "F16B 2/06",
    "F16B 35/00",
    "F16B 9/02"
  ],
  "assignees": [
    "Cameron International Corp"
  ],
  "inventors": [
    "Taylor MOZISEK"
  ],
  "filing_date": "2016-08-22",
  "publication_date": "2018-10-16",
  "grant_date": "2018-10-16",
  "priority_date": "2016-08-22",
  "application_number": "US-201615243539-A",
  "family_id": "61191366",
  "cited_by_count": 7,
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}