In this paper we present a review of the application of two types of magnetic sensors-fluxgate magnetometers and nuclear magnetic resonance (NMR) sensors-in the oil/gas industry. These magnetic sensors play a critical role in drilling wells safely, accurately and efficiently into a target reservoir zone by providing directional data of the well and acquiring information about the surrounding ge...

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...

A directional drilling tool control unit whose design is based on servo control of a rotary valve using the roll-stabilised instrumented system approach has been successfully used in oil fields for over twenty years. In this paper, Field Oriented Control (FOC) is applied to cascaded voltage regulation and servo control using a open-loop plant model of the roll-stabilised control unit. The servo...

In many reservoir studies, anisotropic permeability values in orthogonal directions are often considered to have simple relationships. Often, this permeability anisotropy is modeled only between the vertical and horizontal directions as a certain ratio of values, while permeability values in a horizontal plane are considered equal. In reality, the depositional history of the reservoir results i...

Well "X-01" is a slant (J-Type) directional well and will be subjected to appropriate technically qualified drilling casing planning in order prevent problems such as burst, collapse, tension that can cause increased internal external pressure loads experienced by the casing. The methodology used this research document study quantitative analysis using Drilling Software taking into account load...