Patent ID: 7331397
Filing Date: 2008-02-19
Classification: E21B

Abstract:
1. A passive collection and pneumatic lifting system located in a well and partially positioned in the well bore at the product zone to be recovered and partially positioned substantially up hole from said zone to be recovered comprising; a. at least one pneumatic pipe member, b. at least one fluid product pipe member mounted within said at least one pneumatic pipe member for creating an annulus between the outside diameter of said one fluid product pipe member and said inside diameter of said at least one pneumatic pipe member for allowing pneumatic fluid communication there between, c. a pneumatic pressure generating means for generating controlled pneumatic fluid pressure in said annulus created between said outside diameter of said at least one fluid pipe member and said inside diameter of said at least one pneumatic pipe member, d. a jet barrel having a diameter greater than said at least one fluid product pipe member and a diameter of at least less than said well bore for passage there through positioned substantially in said product zone to be recovered and connected in fluid communication between said at least one pneumatic pipe member and said at least one fluid product pipe member, e. means for delivery of said pneumatic fluid pressure from said at least one pneumatic pipe member to said jet barrel and in a direction for driving said recovery product toward said at least one fluid product pipe member, f. a one way valve means for allowing said product for recovery to flow into said jet barrel, but preventing pneumatic fluid pressure from entering said zone of product recovery in said well formed from a ball, a seat for said ball and a chamber connected to said at least one fluid product pipe member and said chamber having at least one production port for driving said product of recovery toward said at least one fluid product pipe and at least one port through said chamber for creating a vortex in said chamber for agitating and cleaning said ball and seat of well debris on each cycle of pneumatic fluid pressure generation in said lifting system and located substantially at the bottom of said jet barrel and in fluid communication with said product zone to be recovered and in communication with said jet barrel for the introduction of pneumatic fluid pressure sufficient to drive said product collected in said jet barrel up hole through said at least one fluid product pipe member for recovery of said product, g. a seal means formed from a stab-in member having at least one seal member thereon connected to said one-way valve means, and stab-in receiving member operationally connected to said at least one pneumatic pipe member for forming a removable seal upon receiving said stab-in member located below said valve means for sealing said product zone to be recovered from flow except through said one-way valve means and for preventing hammering effects in said jet barrel on said one-way valve means closing communication of said valve means and product zones, and h. a well suspension member connected up hole for holding said at least one fluid product pipe member, one-way valve means, and stab-in tension and allowing sufficient pressure to be exerted for forming a removable seal between said stab-in having said at least one seal and said stab-in receiver member.