Abstract 985,122. Wells, &c. G. A. THOMAS, J. R. HATCH, and D. CRAVEN. Sept. 21, 1962 [May 8, 1962], No. 36031/62. Heading E1F. An open ended sleeve 32 is expanded to contact a producing formation in a bore hole 15, cement is allowed to expand the sleeve further and to harden within, above and beneath the sleeve, and oil from the formation is allowed to penetrate the sleeve wall. A unit 17 comprising a tube 20 carrying the sleeve 32 is incorporated in a casing string 16. Rings 34, at the ends of the sleeve, comprising telescopically sliding copper tubes, are expanded by fluid-pressure, and a sleeve 26 is moved to cover a valve 51 and also telescopic port tubes 54. Cement injected down the string rises outside it passing through the sleeves 32 and extending tubes 54 (Fig. 4, not shown). In Fig. 10 the sleeve 32 is replaced by a rigid sleeve 73 with expansible end sections 71, 72. In a well having several producing formations, each having a unit 17, the sleeves 26 act as valves which control the flow from each formation. Specification 985,121 is referred to.
APPARATUS FOR USE IN COMPLETING WELLS COMPRISING A TUBE ADAPTED TO FORM AN INTEGRAL SECTION OF A CASING STRING, A UNITARY OPEN ENDED FLEXIBLE SLEEVE SURROUNDING SAID TUBE, PIVOTAL ARM MEANS INTERCONNECTING THE ENDS OF THE FLEXIBLE SLEEVE AND SAID TUBE, FLUID PRESSURE OPERATED EXPANSION RING UNITS ON THE ENDS OF SAID SLEEVE TO EXPAND SUCH ENDS INTO CONTACT WITH THE BORE HOLE OF THE WELL ADJACENT A PRODUCING FORMATION OF THE WELL, PRESSURE RESPONSIVE VALVE MEANS COMMUNICATING WITH THE INTERIOR OF SAID TUBE AND CONNECTED WITH THE EXPANSION RING UNITS TO CONTROL THE PASSAGES OF FLUID UNDER PRESSURE THERETO, RADIAL PORT TUBES INTERCONNECTING THE SIDE WALL OF SAID SLEEVE AND SAID TUBE AND OPENING THROUGH SAID SLEEVE AND TUBE, AND A MOVABLE CLOSURE ELEMENT FOR SAID VALVE MEANS AND PORT TUBES WITHIN SAID TUBE AND OPERABLE TO SELECTIVELY COVER OR UNCOVER THE VALVE MEANS AND PORT TUBES.
Claim 2
Dependent Claim
148 words
APPARATUS FOR USE IN COMPLETING WELLS COMPRISING A TUBE ADAPTED TO FORM AN INTEGRAL SECTION OF A CASING STRING, A UNITARY OPEN ENDED FLEXIBLE SLEEVE SURROUNDING SAID TUBE, PIVOTAL ARM MEANS INTERCONNECTING THE ENDS OF THE FLEXIBLE SLEEVE AND SAID TUBE, FLUID PRESSURE OPERATED EXPANSION RING UNITS ON THE ENDS OF SAID SLEEVE TO EXPAND SUCH ENDS INTO CONTACT WITH THE BORE HOLE OF THE WELL ADJACENT A PRODUCING FORMATION OF THE WELL, PRESSURE RESPONSIVE VALVE MEANS COMMUNICATING WITH THE INTERIOR OF SAID TUBE AND CONNECTED WITH THE EXPANSION RING UNITS TO CONTROL THE PASSAGES OF FLUID UNDER PRESSURE THERETO, RADIAL PORT TUBES INTERCONNECTING THE SIDE WALL OF SAID SLEEVE AND SAID TUBE AND OPENING THROUGH SAID SLEEVE AND TUBE, AND A MOVABLE CLOSURE ELEMENT FOR SAID VALVE MEANS AND PORT TUBES WITHIN SAID TUBE AND OPERABLE TO SELECTIVELY COVER OR UNCOVER THE VALVE MEANS AND PORT TUBES.