Development of Radar Navigation and Radio Data Transmission for Microhole Coiled Tubing Bottom Hole Assemblies

Hydraulic orienter has been widely used to alter the drilling direction downhole in coiled tubing drilling. A problem is encountered in construction field. When torque and drag of bottom hole assembly (BHA) are over the maximum output torque of orienter, This caused that it difficult to orient. Therefore, we need to calculate the maximum torque and drag in the process of orientation, it can provide a theoretical basis for designing and selecting the hydraulic orienter. Compared with the conventional force analysis, this paper additionally considered the case of zero weight on bit (WOB), the impact of the mud viscous forces and the relationship between dynamic and static friction, so that we can get more precise result of force analysis.

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Design of spectral-efficient signal construction in radio data transmission control and measuring complexes

Izvestiâ vysših učebnyh zavedenij Priborostroenie ◽

10.17586/0021-3454-2017-60-3-221-228 ◽

2017 ◽

pp. 221-228 ◽

Cited By ~ 2

Author(s):

S.V. Dvornikov ◽

A.V. Pshenichnikov

Keyword(s):

Data Transmission ◽

Transmission Control ◽

Radio Data

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Technology of water shut-off treatment in the gas well using coiled tubing

Oil and Gas Studies ◽

10.31660/0445-0108-2020-6-75-85 ◽

2021 ◽

pp. 75-85

Author(s):

D. S. Leontiev ◽

I. I. Kleshchenko ◽

A. D. Shalyapina ◽

M. M. Mansurova

Keyword(s):

Bottom Water ◽

Urgent Problem ◽

Gas Wells ◽

Flexible Pipe ◽

Gas Field ◽

Gas Well ◽

Coiled Tubing ◽

Bottom Hole ◽

Water Saturated ◽

Gas Fields

In the modern practice of gas field operation, there is a problem associated with the inflow of bottom water to the bottom hole of the well. One of the ways to solve this urgent problem is the introduction of water isolation technologies in the development of gas fields and the use of special compositions and technological equipment for pumping liquids into the watered layers of gas wells. The article deals with the application of a set of special technological measures, such as installation of surface equipment for working in a gas well using coiled tubing, descent of a flexible pipe through a column of pump and compressor pipes with a packer, construction of an inflatable packer, as well as the use of a selective water-insulating composition of the well by pumping it through existing perforation channels in the casing string. Liquids based on ethyl silicate create a kind water shut-off screen between the gas- saturated and water-saturated parts of the gas well formation.

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