|20050017723||Evaluation of fracture geometries in rock formations||January, 2005||Entov et al.|
|20070039759||Mud saver valve||February, 2007||Foley Jr.|
|20080060818||LIGHT-WEIGHT SINGLE JOINT MANIPULATOR ARM||March, 2008||Bourgeois et al.|
|20090266533||SYSTEM FOR DETERMINING SEALING IN A WELLBORE||October, 2009||Baajiens et al.|
|20090032239||Marginal Oil Extraction Device||February, 2009||Grant|
|20100051267||Gas flow system||March, 2010||Lowe et al.|
|20100084140||DOWNHOLE SEAL AND ANCHOR RELEASING SYSTEM AND METHOD||April, 2010||Hern et al.|
|20090260805||METHODS OF INFERRING FLOW IN A WELLBORE||October, 2009||Augustine|
|20090032249||METHOD AND SYSTEM TO OBTAIN A COMPOSITIONAL MODEL OF PRODUCED FLUIDS USING SEPARATOR DISCHARGE DATA ANALYSIS||February, 2009||Morales et al.|
|20090120640||Methods of Integrating Analysis, Auto-Sealing, and Swellable-Packer Elements for a Reliable Annular Seal||May, 2009||Kulakofsky et al.|
|20050284624||APPARATUS FOR INDUCING VIBRATION IN A DRILL STRING||December, 2005||Libby et al.|
 1. Field of the Invention
 The present invention relates generally to a method and assembly for positioning and setting a packer or bridge plug in a subterranean well and positioning and detonating at least one perforating gun and/or other tool in the well during a single trip, and more particularly, to such a method and assembly wherein the packer or plug and at least one perforating gun and/or other tool are accurately positioned and safely deployed on electric line during such single trip into the well.
 2. Description of Related Art
 Conventionally, packers and bridge plugs have been run into a subterranean well on electric wireline to rapidly place and deploy such apparatus in the well. After setting the packer or bridge plug in a well, the electric wireline is removed and a separate trip is made into the well to convey one or more perforating guns on either electric line or tubing. The explosive charges that are contained in the perforating gun are then detonated thereby perforating casing, that is positioned and cemented in the well bore, and the adjacent subterranean formation. In this manner, the well is completed by providing fluid communication between the interior of the well and the subterranean formation of interest. However, the multiple trips associated with such conventional techniques for placing and deploying packers and perforating guns in a well are time consuming and expensive.
 U.S. Pat. Nos. 5,611,401 and 6,142,231 describe a one-trip system for running a packer and a perforating gun into a well. A perforating gun and packer are lowered into the well on coiled or rigid tubing and a setting tool that is connected to and supports the packer is actuated by a pressure pulse or an acoustic signal to set the packer. The setting tool is constructed to automatically release from the packer upon actuation and is retrieved therefrom by manipulation of the coiled or rigid tubing. The perforating gun is then positioned in the well and fired to complete the perforating procedure. The gun and setting tool are then removed from the well. Several disadvantages exist to the one-trip procedure described in these patents. In order to accurately position tools or devices in a subterranean well, it is necessary to run a gamma ray logging tool or a tubular collar locator probe on electric line. In order to accurately locate the packer and perforating gun of U.S. Pat. Nos. 5,611,401 and 6,142,231, it would be necessary to lower such logging tool(s) and/or probes on electric line through the rigid or coiled tubing to a point near the packer or perforating gun. This additional procedure adds unnecessary expense to the operation and is time consuming. In addition, it may be desired to run other apparatus, such as pressure and/or temperature gauges, in the well during the completion operation that would not be possible without the use of additional wireline equipment at the well head. Further, certain of the methods disclosed in U.S. Pat. Nos. 5,611,401 and 6,142,231 use different pressures to rupture disks in the setting tool in order to set the packer and by necessity utilize an impact type detonator for the perforating gun which requires dropping a rod from the well head through the rigid or coiled tubing so as to detonate the perforating gun. In these instances, an operator cannot determine with certainty if the packer has set or if the gun has detonated thereby creating safety problems when removing the apparatus from the well.
 Thus, a need exists for methods and assemblies for accurately positioning and safely deploying a packer and perforating gun(s) in a subterranean well during a one-trip completion operation. A further need exists for positioning and operating other equipment such as logging probes and/or pressure and/or temperature gauges during a one-trip completion operation.
 To achieve the foregoing and other objects, and in accordance with the purposes of the present invention, as embodied and broadly described herein, one characterization of the present invention may comprise a one-trip well completion method comprising transporting an assembly comprising at least one location device, at least one tool and a packer on an electric line in a tubular. The packer is accurately positioned at a first location in the tubular and expanded into sealing engagement with the tubular. The at least one tool is released from the expanded packer and accurately positioned at a second location in the tubular.
 In another characterization of the present invention, a one-trip well completion method comprises transporting an assembly having at least one location device, at least one tool and a packer on an electric line in a tubular that is positioned in a subterranean well bore. The packer is accurately positioned at a first location in the tubular and expanded into sealing engagement with the tubular. Thereafter, the at least one tool is released from the expanded packer and accurately positioned at a second location in the tubular.
 In yet another characterization of the present invention, an assembly is provided for insertion into subterranean well during a one-trip completion method on an electric line. The assembly comprises at least one location or measurement probe adapted to be connected to the electric line, a packer assembly, and a perforating gun that is connected at one end thereof to the at least one location or measurement probe and at the other end thereof to the packer assembly.
 The accompanying drawings, which are incorporated in and form a part of the specification, illustrate the embodiments of the present invention and, together with the description, serve to explain the principles of the invention.
 In the drawings:
 Referring to
 As sequentially connected together in accordance with the present invention, the assembly
 Once the packer is accurately positioned within the tubular
 Although the perforating gun is illustrated as having explosive charges uniformly spaced along the length of the gun, it is within the scope of the present invention that these charges may be located at different positions along the length of the gun so as to penetrate different portions of formation or zone
 As illustrated in
 Although the assembly of the present invention is illustrated in
 While the foregoing preferred embodiments of the invention have been described and shown, it is understood that the alternatives and modifications, such as those suggested and others, may be made thereto and fall within the scope of the invention.