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Blind rams

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Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, October 20–22, 2003
Paper Number: SPE-85295-MS
... Abstract Shearing blind rams are used in ram type blowout preventers to shear drill pipe, casing, tubing, and wireline cables in the wellbore. Once the above items are cut, the rams containing elastomeric sealing elements, must be able to seal and contain the wellbore pressure. This paper...
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The Coupler. Section showing Mud Flow with <span class="search-highlight">Blind</span> <span class="search-highlight">Rams</span> Closed
Published: 26 September 2004
Figure1 The Coupler. Section showing Mud Flow with Blind Rams Closed More
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Contingency Operations Flow Chart for Leaking PCE above <span class="search-highlight">Blind</span> <span class="search-highlight">Rams</span>
Published: 26 September 2016
Figure 4 Contingency Operations Flow Chart for Leaking PCE above Blind Rams More
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Shear and <span class="search-highlight">blind</span> <span class="search-highlight">rams</span> subpart graph.
Published: 21 March 2011
Figure 5 Shear and blind rams subpart graph. More
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U BOP Shearing <span class="search-highlight">Blind</span> <span class="search-highlight">Ram</span>
Published: 20 October 2003
Figure 1 U BOP Shearing Blind Ram More
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U BOP Shearing <span class="search-highlight">Blind</span> <span class="search-highlight">Ram</span> with replaceable alloy blades
Published: 20 October 2003
Figure 2 U BOP Shearing Blind Ram with replaceable alloy blades More
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U BOP &quot;DS&quot; Shearing <span class="search-highlight">Blind</span> <span class="search-highlight">Ram</span>
Published: 20 October 2003
Figure 3 U BOP "DS" Shearing Blind Ram More
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U BOP &quot;ISR&quot; Interlocking Shearing <span class="search-highlight">Blind</span> <span class="search-highlight">Ram</span>
Published: 20 October 2003
Figure 4 U BOP "ISR" Interlocking Shearing Blind Ram More
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, February 15–18, 1994
Paper Number: SPE-27503-MS
.... Blind rams feature replaceable elastomer packers and top seals which can be closed on an open hole to obtain a wellbore pressure seal. The well bore must be free of any obstructions at the blind ram cavity. Any tubulars, wireline, sinker bars, or other strings will not only prevent the blind rams from...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing & Well Intervention Conference & Exhibition, March 24–25, 2015
Paper Number: SPE-173690-MS
... (approximately 51 ft 4 in.). The slip rams were then closed and a weight check was performed. The pipe rams and inverted rams were then closed. The CT fish was shear/cut, the pipe was picked up and the blind rams were closed. This was concluded by laying down the fish and the process was repeated 276 times...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology, September 9–11, 2002
Paper Number: SPE-77227-MS
... of Saudi Arabia. This paper discusses changes in BOP stack arrangements, kill/ choke line requirements, replacement part criteria, elastomer application limits, and use of variable bore rams and shear blind rams. Also included are requirements for number of isolation barriers, pressure testing/maintenance...
Proceedings Papers

Paper presented at the SPE Offshore Europe Oil and Gas Conference and Exhibition, September 3–6, 2013
Paper Number: SPE-166551-MS
... Abstract Currently available secondary intervention systems may not successfully operate critical subsea blowout preventer (BOP) safety functions such as closing pipe rams, blind rams, and shear rams. Failure may occur because sufficient hydraulic power (pressure times flow rate...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 1993
Paper Number: OTC-7249-MS
... in the well bore, sealing on the pipe and against each other to shut in the well. Alternative ram configurations include pipe rams designed to seal on a specific pipe size, variable rams designed to seal on a range of pipe sizes, blind rams designed to seal on an open bore, and shear rams designed to sever...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 4–7, 1992
Paper Number: SPE-24793-MS
... perform the following functions: Blind rams seal when there is no CT or tools in the BOP body Shear rams cut through the CT Slip rams hold the CT at forces up to its break strength Pipe rams seal around the CT The configuration of the BOP rams, equalizing valves and side port facility allow...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, November 15–17, 2011
Paper Number: IPTC-14888-MS
... as for locations of drilling equipment. Because of these reasons, the first two exploratory wells on the Bayandyskoye oilfield were drilled from rigs equipped with a power top drive, with corrosion-resistant BOP with blind rams, pipe rams and shear rams, and with an annular preventer. Initially aluminium tubulars...
Journal Articles
J Pet Technol 59 (04): 62–65.
Paper Number: SPE-0407-0062-JPT
Published: 01 April 2007
... connections to be made up or broken out without interrupting drilling-fluid circulation to the wellbore. The main unit is a pressure container constructed from three blowout-preventer (BOP) bodies, with pipe rams at the top, blind rams in the center, and inverted pipe rams at the bottom. A combination make...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 1–3, 2011
Paper Number: SPE-139493-MS
... With drill pipe or casing in the wellbore, this requires blind shear rams or casing rams to be positioned in the subsea BOP stack. Figure 1 shows a typical deepwater subsea BOP stack arrangement showing the position of these rams. Abstract In deep-water, emergency disconnection while...
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Coiled Tubing Unit Control Panel - Blow-Out Preventer Portion  Left to Righ...
Published: 21 September 2008
Figure 2 Coiled Tubing Unit Control Panel - Blow-Out Preventer Portion Left to Right: Top Row: (Red - left) Blind Rams, (Red - right) Shear Rams Second Row: (Black - left) Slip Rams, (Black - right) Pipe or Tubing Rams Third Row: (Red) Shear/Seal Combination Rams, (Black) Auxiliary Control, can... More
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Subsea BOP IBS. Legends: COLUNA – STRING; POÇO – WELLBORE; ANULAR e ROCHA –...
Published: 21 March 2011
Figure 8 Subsea BOP IBS. Legends: COLUNA – STRING; POÇO – WELLBORE; ANULAR e ROCHA – CASING ANNULUS and ROCK; PERF – Drilling; SFTY_VLV – Safety Valve; DP – Drill Pipe; DP_TOP_DRV – Top Drive; DP_SFT_VLV – Stab-in Safety Valve; BHA_FLT_VLV – Floating Valve on BHA; DRLG_BOP_X_BLND (BOP) – Shear and... More

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