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Proceedings Papers

Paper presented at the Offshore South East Asia Conference, February 17–20, 1976
Paper Number: SPE-5972-MS
... string and hanger, a tubing hanger Prior to running the tubing string and hanger, a tubing hanger orienting bushing is run. (Fig. 2). The orienting bushing is landed in the connector below the blowout preventers. After it is landed, it is rotated until a spring loaded dog locks into a vertical slot...
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<b>Locking</b> <b>Dogs</b> supporting the weight of the fairlead
Published: 06 September 2011
Figure 17 Locking Dogs supporting the weight of the fairlead More
Proceedings Papers

Paper presented at the SPE Offshore Europe, September 8–11, 1987
Paper Number: SPE-16536-MS
... this difficulty a specific lock was designed (Fig. 1) ; the top No Go lock features a floating piston, that will move up when pressurizing the control line, pushing a locking sleeve that will secure the locking dogs in an outer position. A snap ring will hold the locking sleeve in place thus preventing...
Proceedings Papers

Paper presented at the Offshore South East Asia Show, February 26–29, 1980
Paper Number: SPE-8855-MS
.... When the box section has seated on the pin drive shoulder, the actuating screws are then rapidly driven in by impact wrench. This action, as illustrated in Figure 2, drives the locking dogs in to mate with corresponding groove rings on the pin member. In doing so, the tapered surface of the dog threads...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 1997
Paper Number: OTC-8471-MS
.... Petrobras is still working to improve this new conception. There are some advantage using this conception : - No divers are requested during pull in operation - Reduced standby on weather. - Standardization. - Divers will only work after complete the three riser installations. They will lock the dogs...
Proceedings Papers

Paper presented at the SPE California Regional Meeting, April 18–20, 1979
Paper Number: SPE-7955-MS
... internal surface of the box permits easy engagement. No rotation or axial alignment is required at any time. When the box section has seated on the pin drive shoulder, the actuating screws are then rapidly driven in by impact wrench. This action, as illustrated in Figure 2, drives the locking dogs...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27263-MS
... is limited by the ROV water depth. This allows the connector to be used in ultra- deep water environments along with continental shelf environments. The connector requires rotation of the lifting sub and internal dogged mandrel, to engage the locking interfaces within the connector. The lifting sub has two...
Proceedings Papers

Paper presented at the SPE Deepwater Drilling and Completions Conference, June 20–21, 2012
Paper Number: SPE-151279-MS
... of buckling phenomenon in complex or unconventional wells drilled today. Indeed, existing buckling criteria assume generally that the wellbore is idealistically perfect without any dog legs. Recent advancements in drillstring mechanics modelling has demonstrated that dog legs, friction and rotation affect...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2005
Paper Number: OTC-17141-MS
... joint. The BHA can be tripped with wireline, coiled tubing or drill pipe. When the BHA is run into the well, spring-loaded dogs in the DLA stop the tool at the proper depth to lock it to the profile nipple. The locking process is accomplished by shifting a sleeve downward to positively extend lock dogs...
Journal Articles
J Pet Technol 20 (01): 93–101.
Paper Number: SPE-1845-PA
Published: 01 January 1968
... restricting the passage of drilling equipment. In these instances extensive remedial work is required to realign the parted pieces and seal the exposed formations. Several methods used to strengthen the bottom joints of casing strings include locking set screws in the couplings, putting wedges in special...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 7–9, 1984
Paper Number: OTC-4728-MS
... identifies the parts of the ESV. The four cross-hatched parts forming the "chassis" carry the following components: A.P.I. specifIcation ball, seat, and guided cage. Piston unit for transport. A collet with locking dogs. A prop ring with integral no-go dogs which are interdigitated with the collet fingers...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 17–19, 2015
Paper Number: SPE-173141-MS
... ¼ in.) and drilled the horizontal 8 ½ in. section was thought to be a possible cause of lock-up situation. If a point-the-bit RSS enables drilling a generally smooth wellbore, the utilization of steerable motor in the horizontal section may create a slide-rotary pattern with numerous dog legs. As a consequence...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 17–19, 2009
Paper Number: SPE-119861-MS
... drillstring design laboratory test top load pipe Upstream Oil &amp; Gas criteria rotation Directional Drilling friction dog leg torque drilling operation drill pipe Exhibition coefficient stiff-string model axial force transfer wellbore horizontal well bottom load spe iadc...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 6–8, 2018
Paper Number: SPE-193507-MS
... flapper valve and spring, a shear ring and locking dogs that allow the curved flapper to be fully closed during a pressure test; while the valve can be fully over ridden with a higher hydraulic pressure, which then opens a large-internal diameter through valve bore, permitting the internal diameter...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 1989
Paper Number: OTC-6086-MS
.... The casing hanger and slip dog assembly is securely locked down by the activation of the annulus seal. The unique all-metal annulus sealing system developed for this application consists of two parts, a seal ring and an energising ring. The seal ring is cylindrical with its lower cross section forming a "U...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 27–30, 1987
Paper Number: OTC-5574-MS
... into the external groove of the universal 30" wellhead housing that was left behind after exploratory drilling. A full lock dog connector in the base of the completion guide struc- ture is actuated by a cam ring in the connector body to lock to the 30" housing groove when the well is reentered. The hydraulic...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, March 6–8, 2012
Paper Number: SPE-150347-MS
... casing exit techniques. The technology ultimately selected by the operator involved a casing exit system with a longer whipstock face therefore providing a longer casing exit window and reduced dog leg severity through the junction area. Additionally, the chosen whipstock system provided a patented...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 1986
Paper Number: OTC-5320-MS
...) running tools can lock on to the guidepost for installation or removal. The outer body also features a landing ring that lands in the bottom of the guidepost receptacle s funnel to space out the latch dogs below the receptacle body. Inner Sleeve - The lnn_ersleeve i.S a pipe which fits inside the outer...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, March 23–24, 2010
Paper Number: SPE-130520-MS
...Fig 2 Locking dogs with no-go shoulder and seal ring ...

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