Adjustable Gauge Stabilizer and Torque and Drag Reduction Tools Reduce Overall Drilling Times by at Least 20%: A Case Study

McCormick, John; Osorio, G C Juan; Andachi, Jorge Humberto; Barth, Megan Elizabeth

doi:10.2118/141673-ms

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…A drill pipe bearing sub is affected by the wellbore quality and the installation number, resulting in a poor drag-reduction effect [13][14][15]. For instance, a hydraulic oscillator is limited by the high circulating pressure loss and the short service life.…”

Section: Introductionmentioning

confidence: 99%

Drag‐Reduction Performance Evaluation of Controllable Hybrid Steering Drilling System

Zou

Chen

et al. 2021

Shock and Vibration

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The excessive drag/torque and the backing pressure is an important factor that restricts the improvement of the penetration rate and the extension of the drilling in the sliding drilling process of extended-reach wells and horizontal wells. To deal with this problem, this paper developed a novel controllable hybrid steering drilling system (CHSDS) based on the friction-reducing principle of a rotating drill string. The CHSDS is composed of a gear clutch, hydraulic system, and measurement and control system. By controlling the meshing and separation of the clutch with the mud pulse signal, the CHSDS has two working states, which leads to two boundary conditions. Combined with the stiff-string drag torque model, the effects of the drilling parameters on the friction-reducing performance of the CHSDS are analyzed systematically. The results show that the friction reduction effect in the inclined section is the most significant, followed by that in the horizontal section, whereas there is almost no impact in the vertical section. Friction reduction increases with the rotary speed and the drilling fluid density, whereas it decreases with the increase in the surface weight-on-bit and the bit reaction torque. Field tests confirm the separation and meshing function of the CHSDS. The developed controllable hybrid steering and friction-reducing technology provides an alternative approach for the safe and high-efficiency drilling of horizontal wells.

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Section: Introductionmentioning

confidence: 99%

Drag‐Reduction Performance Evaluation of Controllable Hybrid Steering Drilling System

Zou

Chen

et al. 2021

Shock and Vibration

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“…e variable diameter stabilizer was designed, and its working mechanics were calculated [9,10]. e variable diameter stabilizer was developed and applied in the field [11,12]. In order to make the variable diameter stabilizer play a better role in the directional well, the variable diameter stabilizer was used in combination with the positive displacement motor, antiwear and antitorque tool [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Application of Composite Deflecting Model in Horizontal Well Drilling

Shaohu

Zhu

2020

Mathematical Problems in Engineering

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Based on current issues of difficulties in controlling horizontal well trajectory and high cost in drilling deflecting, a compound deflecting BHA (bottom hole assembly) with diameter-adjustable stabilizer (DAS) and bending-adjustable housing (BAH) is presented. According to the DAS operational principles and the stress condition in operation, the computational formula of wedge’s axial moving displacement and piston’s radial telescopic displacement of the DAS driven by drilling fluid pressure is presented. This formula is verified by lab experimental simulation. Three-points-circle method is utilized to calculate geometrical build up rate of compound deflecting BHA, and the result is verified by field data. The method is utilized to make design and calculate for compound BHA. The research can be used as a reference for compound deflecting drilling in horizontal wells. The flow rate and pressure difference have a very serious impact on the flow regulator erosion, so the flow rate and pressure difference should be controlled when the DAS works, and it is suggested that the flow regulator should maintain and replace frequently when in service.

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“…The use of an adjustable stabilizer eliminates the need to trip the drill-string out and replaces the BHA when the build section or tangent section is completed. As a result, round trips can be saved with substantial savings in the drilling time and cost, as well as improvement on the well geometry (McCormick et al, 2011;Osmundsen et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Development of an adjustable stabilizer for controlling the borehole trajectory

Tang

Zhu

2018

JAMDSM

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During the drilling process, many types of bottom-hole assembly are used to adjust the well inclination and azimuth. For the drilling of inclined wells or horizontal wells, it has to face problems of repeated round trips so as to control the borehole trajectory. Such problems lead to the increase in non-productive time and the drilling cost. In order to address this issue, the idea of generating different types of bottom-hole assembly without round trips of drill-string was formed. In this paper, an adjustable stabilizer has been developed to avoid repeated round trips of the drill-string. Firstly, the mechanism of adjustable stabilizer controlling the borehole trajectory is presented. Secondly, the structure and operating principle of the adjustable stabilizer are described. Thirdly, numerical verifications of the key components of the adjustable stabilizer are conducted. Finally, laboratory tests and field tests are carried out to examine the design. Results of the numerical simulations and the laboratory and field tests show that the adjustable stabilizer operates normally and three phases of the radial pistons can be reached through regulating the flow of the drilling fluid. In addition, the pressure differences for starting the phases are measured.

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Adjustable Gauge Stabilizer and Torque and Drag Reduction Tools Reduce Overall Drilling Times by at Least 20%: A Case Study

Cited by 6 publications

References 7 publications

Drag‐Reduction Performance Evaluation of Controllable Hybrid Steering Drilling System

Drag‐Reduction Performance Evaluation of Controllable Hybrid Steering Drilling System

Application of Composite Deflecting Model in Horizontal Well Drilling

Development of an adjustable stabilizer for controlling the borehole trajectory

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