The most costly operation in the oil exploration is the well network drilling. One of the most effective ways to reduce the cost of drilling networks is decreasing the number of the required wells by selecting the optimum situation of the rig placement. In this paper, Balas algorithm is used as a model for optimizing the cost function in oil well network, where the vertical and directional dril...

Abstract Coiled tubing (CT) is prone to buckling and locking due axial friction when extending in large displacement directional wells horizontal wells. The traction robot of CT can provide traction, which fundamentally address the problem difficult downward entry CT. operation principle, size, force, speed other technical indicators existing more cutting-edge types robots are analyzed, critica...

The technology of bi-directional data transmission between the well bottom and ground play an increasingly important role in modern drilling technology while drilling. The technology of acoustic data transmission while drilling can achieve higher band rate compared with the traditional. The transducer is one of the most imp-ortant components of it. This article has simulated the piezoelectric c...