Improved Sliding Through Chemistry

Bland, R.G.; Halliday, William

doi:10.2118/48940-ms

Cited by 9 publications

(6 citation statements)

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“…The overall performance improvements that can be gained in the field by using aggressive PDC bits, polished cutters, ROP enhancers and combinations of the above have been reported before (4,5,7,8,9) . A Eugene Island well is a particularly good example.…”

Section: Rop Drilling Cost and Savingsmentioning

confidence: 82%

“…However, no WBM system developed to date can completely eliminate the occurrence of bitballing. A more universal solution has become available through the use of ROP enhancers (5,7,8,9) . Our current understanding indicates they work to prevent bit-balling by oil-wetting action that gives rise to the following three effects:…”

Section: Drilling Fluid Design: Use Of Rop Enhancersmentioning

confidence: 99%

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Drilling More Stable Wells Faster and Cheaper with PDC Bits and Water Based Muds

Oort¹,

Ronald²,

Rolf³

2000

Proceedings of IADC/SPE Drilling Conference

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fax 01-972-952-9435. AbstractROP enhancer chemistry for water-based muds combined with polished cutter PDC (Polycrystalline Diamond Compact) bit technology is shown to: 1) increase penetration rates and lower costs drilling high pressured shales by reducing bit balling and improving drilling efficiency and 2) improve borehole stability by reducing exposure time and reducing near wellbore fracturing which minimizes pore pressure elevation and loss of borehole integrity. Laboratory drilling simulator and pore pressure transmission results, a case history, caliper logs and summary economics from 16 offshore wells are presented documenting the effectiveness of this technology.

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Section: Rop Drilling Cost and Savingsmentioning

confidence: 82%

Section: Drilling Fluid Design: Use Of Rop Enhancersmentioning

confidence: 99%

Drilling More Stable Wells Faster and Cheaper with PDC Bits and Water Based Muds

Oort¹,

Ronald²,

Rolf³

2000

Proceedings of IADC/SPE Drilling Conference

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“…During sliding mode, according to Bland and Halliday (1998), "drag is dependent on the static coefficient of friction between the drill string and wellbore, drill string weight, borehole geometry and borehole quality. During sliding mode, according to Bland and Halliday (1998), "drag is dependent on the static coefficient of friction between the drill string and wellbore, drill string weight, borehole geometry and borehole quality.…”

Section: Fig 17-a Good Trench Is Important To Initiate a New Holementioning

confidence: 99%

First Openhole Sidetrack in Deep Horizontal Well Saves Time and Lowers Cost: A Case Study

Dang¹,

Peng²,

Zhou³

et al. 2013

All Days

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Recently, the first successful openhole sidetrack without a cement plug in Chong Qing field (central China) was drilled in a 5 7/8-in. horizontal section. Since 2009, approximately 50 horizontal wells using an LWD tool for well placement have been drilled in the field. Most of the wells are deep and geologically challenging, with uncertainty of formation dip and potential faults along the long lateral section. As a result, with only the near-wellbore formation measurements to use during drilling, it has been common to unintentionally drill out of the target zone during the well placement.There have been approximately 10 sidetrack wells in the field. Commonly used techniques for sidetracks in an open hole include time drilling without a cement plug, sidetracking from a cement plug, and sidetracking from a whipstock. In this field, the operator wanted to avoid using whipstocks. Openhole sidetracking without cement plugs using basic time drilling has had a low success rate. Therefore, sidetracking from a cement plug was the operator's first option. However, the time to set the cement plug in these deep horizontal wells averaged approximately 12 days, including a bottomhole assembly (BHA) trip. It was therefore necessary to re-evaluate openhole sidetracks without a cement plug to save overall time and cost.Two previous failed openhole sidetracks without cement plugs were analyzed. Key lessons were learned and critical factors were identified, which could lead to future success through the application of a more consistent drilling technique.Once the feasibility of the method was established, the technology was successfully implemented to drill a sidetrack without a cement plug. The sidetrack was completed in only 4 days-at least 7 days faster than the openhole sidetracks with a cement plug in this field.This sidetrack represents a step change in efficiency and a reduction is risk during openhole sidetracking in these deep horizontal wells in Chong Qing field. Application of the right techniques will save drilling costs and time, thereby offsetting the geologic challenges in this drilling environment. TX 75083-3836, U.S.A., fax +1-972-952-9435

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“…The bit balling is likely to happen when drilling into shale formations in the drilling operation, and the adsorption of clay particles on the surface of drilling bits and drilling tools are very serous, so the rate of penetration (ROP) will reduce remarkably [1][2][3] . The bits balling will increase the torque, reduce the cutting efficiency, and cut off the circulation in annular space, even cause pipe sticking [4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

Study on Drilling Fluid Technology of Eliminating Bit Balling by Changing Wettability

Yang

2012

AMR

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Using triethanolamine, vegetable fatty acid, alkyl polyoxyethylene alkyl ether sulfuric acid ester and dimethyl sulfate as raw materials, a new kind of anti-balling additive for drilling engineering (WORB) was synthesized. The wetting property and anti-balling performance of WORB were investigated according to the experiments of wettability, surface tension and absorption effect. The results indicate that the adsorption of WORB on the surface of the cuttings is monolayer adsorption, which can avoid repeated cutting caused by the agglomeration of cuttings. WORB can alter the wettability of rock surface and the inner pores of the rock to reduce the surface tension of the rocks. Moreover, WORB can form multilayer chemical and physical adsorption on the surface of drill bits and BHA in the form of oriented adsorption of organic phosphine.

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Improved Sliding Through Chemistry

Cited by 9 publications

References 0 publications

Drilling More Stable Wells Faster and Cheaper with PDC Bits and Water Based Muds

Drilling More Stable Wells Faster and Cheaper with PDC Bits and Water Based Muds

First Openhole Sidetrack in Deep Horizontal Well Saves Time and Lowers Cost: A Case Study

Study on Drilling Fluid Technology of Eliminating Bit Balling by Changing Wettability

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