Otis Engineering Corporation

David T Merritt

Flint R George

Henry Louis Restarick

Olen R Long

Robert S Higgins

David W Fish

A perforating gun is supported from the lower end of a side pocket mandrel. The perforating gun includes a mechanical detonator which is received within the side pocket receptacle bore. The mechanical detonator is actuated in response to striking engagement by a kickover tool. The side pocket mandrel includes a longitudinal production bore which is connected in alignment with a string of production tubing. The perforating gun assembly is run in with the production tubing during initial installation of isolation packers, and the shoot is carried out while the well bore is in an underbalanced pressure condition.

Eccentrically actuated perforating guns

A side pocket mandrel having deflectors provided by external indentations formed in the wall of the mandrel body and providing corresponding internal protrusions located just above the upper end of the receptacle bore, such protrusions being shaped generally like deflectors and serving the same purposes as deflectors.

Side pocket mandrel

A latch for releasably anchoring well tools such as gas lift valves, or the like, in receptacles in well conduits, the latch becoming automatically locked in the receptacle upon reaching its proper position therein.

Well tool locking device

A high-strength side pocket mandrel for high pressure service having a full-opening bore throughout its length but having a bore of keyhole shape above its receptacle bore to provide minimal but ample space for operation of a kickover tool for installing devices in the receptacle bore and providing strengthened walls for withstanding greater forces which would tend to burst or collapse the mandrel.

A kickover tool which has its tool carrier latched in aligned and kicked-over positions. The locator key is stopped during upward travel of the tool by engaging a muleshoe.

Kickover tool

An improved side pocket mandrel having a body comprising a one-piece main body section in which a main bore and a receptacle bore extend longitudinally therein and an upper body section having space therein for operating a kickover tool, welded together with a circumferential weld. In another embodiment, the machined main body section is welded by circumferential welds between upper and lower body sections. Additional embodiments are further disclosed having means therein for orienting kickover tools which are run and manipulated by wire line or pump down techniques and also having deflectors therein for deflecting regular well tools back into the main passage when approaching the receptacle from above and yet guiding flow control devices into the receptacle when such device is moved laterally into alignment with the receptacle by a kickover tool. Some disclosed embodiments have check valve means controlling flow between the exterior and the interior thereof. Methods for constructing such side pocket mandrels and methods of welding tubular members, such as body sections of such mandrels, together with circumferential welds are also disclosed.

Growing community of inventors

Celina, TX, United States of America

David T Merritt