SEAL AND SACRIFICIAL COMPONENTS FOR A DRILL STRING

• Main Authors: DERKACZ PATRICK ROBERT, LOGAN JUSTIN CHRISTOPHER, NORMANDEAU DANICK R. J, WACKETT JASON B, FRANCOEUR ANGELICA J. B, BERRY RILEY J, LOGAN AARON WILLIAM
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2018
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention provides a gap joint for use with a gap sub for electromagnetic telemetry. The gap joint has a replaceable uphole shoulder on the male gap joint component, which may be composed of a sacrificial material, to extend gap joint useful life where there is electrolysis of the component outside diameter. The gap joint also has a thicker outside diameter seal to reduce the risk of underlying O-ring extrusion and failure, again extending gap joint useful life. The thicker seal may also be able to withstand higher pressures before collapsing or experiencing punctures in unsupported areas.The replaceable shoulder and outside diameter seal can be used separately or together in a gap joint. 种与用于电磁遥测的间隙器件起使用的间隙接头。间隙接头在阳间隙接头部件上具有可替换的井上肩部，该可替换的井上肩部可以由牺牲材料组成，以延长其中存在部件外径电解的间隙接头的使用寿命。间隙接头还具有较厚的外径密封件，以降低潜在的O形环挤压和失效的风险，再次延长了间隙接头的使用寿命。较厚的密封件还可以在无支撑区域塌陷或经历刺穿之前承受较高的压力。可替换肩部和外径密封件可以在间隙接头中单独使用或起使用。