Methods and apparatus for completing oil and gas wells

TL;DR: In this article, an impermeable cement wellhousing comprised of inner and outer substantially continuous cement liners which envelop and insulate from corrosion and erosion a conventional outer metal or other well casing while the outer casing internally reinforces the cement well housing.

TL;DR: In this paper, the authors proposed a method for running a liner, production packer and polished bore receptacle into a well on the production tubing string, cementing the liner in place by pumping cement through the production tube string, setting the packer, and optionally thereafter releasing an upper portion of the tubing string from a PBR.

TL;DR: In this paper, an oil or gas well has a well bore which penetrates a production zone and a casing string which is anchored in the well bore by a column of cement bonded to the casing string and well bore.

TL;DR: In this paper, a perforating tool string includes a coiled tubing string, a perfating gun, a releasable gun hanger, and a pressure responsive release connecting the coiled tube string to the perfusing gun.