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Keywords: shale
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Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, August 27–29, 2018
Paper Number: SPE-190998-MS
... such as unstable long open hole interval, extremely slow rate of penetration (about ~3m/hour) in abrasive, grinding conglomerate and shale cap rock (less than 1m/hour). Reservoir structural and stratigraphic uncertainty such as local formation dip changes, 3-5m thick tight sand stacked or pinch out, inconsistent...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, August 27–29, 2018
Paper Number: SPE-191105-MS
... Abstract An attempt has been made in this work to formulate a novel water based mud system with acrylamido-methyl-propane sulfonate polymer (AMPS) grafted clay/CuO nanocomposite for drilling the high temperature troublesome shale formations. Literature survey found several water mud...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, August 27–29, 2018
Paper Number: SPE-191027-MS
... Abstract Production in shale is highly related to the well placement in both sweetspot and fracable zone. Due to both, market conditions and also shale property, geosteering in tight shale reservoirs have generally employed basic and economical steering tools, such as gamma ray; however, though...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, August 27–29, 2018
Paper Number: SPE-191111-MS
... ). In this study, gas permeability tests were conducted to measure pore characteristics of shale before and after LN2 treatment. According to the theory of seepage flow mechanics, the permeability is governed by Darcy’s Law, the typical calculation formula can be described below: (1) k = Q μ Δ L A Δ...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference, August 22–24, 2016
Paper Number: SPE-180541-MS
.... This new drilling fluids system is formulated by using special HPHT synthetic polymers and specialty additives to reduce HPHT fluid loss of the system and provide maximum shale inhibition in HPHT wells, limitation of foam, and increasing ROP. This system significantly reduced the degradation of polymers...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference, August 22–24, 2016
Paper Number: SPE-180643-MS
... to the filed for the final tests. The drilled formations were mostly soft to medium hard and ranged from shale to limestone. In most of reported cases, these bits outperformed the competition bits with Rate of Penetration (ROP) improvement ranging from 24% to 108% resulting in cost and time savings...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, July 9–11, 2012
Paper Number: SPE-156469-MS
... Abstract Shale is identified as one of the main factors strongly impacting the distribution of stress in the casing and cement sheath system. The risk of radial cracking induced by thermal stress should not be overemphasized, and it highly depends on fluid temperature in the wellbore and fluid...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, July 9–11, 2012
Paper Number: SPE-155598-MS
... Abstract The commercial development of natural gas in shale formations has been realized in U.S. The exploration and production of gas in shale is closely related to the progress of fracturing technology, and fracturing stimulation is becoming the key technology for developing gas production...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, July 9–11, 2012
Paper Number: SPE-154846-MS
... Abstract As an unconventional gas resource, shale gas has been developed mostly in shallow reservoirs which are mainly buried in depth form 76 m to 2439 m in the world. However, the deep shale gas is drawing more attention as time goes by. In this paper, deep shale gas in Sichuan Basin...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, July 9–11, 2012
Paper Number: SPE-155536-MS
... Abstract Drilling of shale has long been a challenge due to its strong potential for wellbore instability. Designing of drilling fluids which minimize the interaction with shale is critical in the success of these drilling practices. Shale instability is mainly related to its abundance of clay...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, July 9–11, 2012
Paper Number: SPE-155825-MS
... drilling operation amu darya drilling fluids and materials right bank drilling fluid casing and cementing gas reservoir shale sandstone shallow secondary gas pool gas field zwitterionic polymer drilling fluid system drilling casing design upstream oil & gas ultra-high pressure...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, July 9–11, 2012
Paper Number: SPE-156221-MS
... mechanisms from cavings recovered from the problematic well provided significant insights into the likely nature of instability problems in the ERD well. Hole instability problems were attributed to the failure of weak bedding planes and anisotropic rock strength in the shales interbedded with sandstones...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, July 9–11, 2012
Paper Number: SPE-155897-MS
... of coalseam with 136m in total and 30 layers of carbonaceous shale with 49m in total were drilled. The thickness of single coalseam is up to 34m; 2 layers of coalseam with 11m and 58m thickness were encountered in directional interval in well Ke 33-Ping, and no borehole problems and accidents happened. Good...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, July 9–11, 2012
Paper Number: SPE-155937-MS
... in complex carbonates, shale-gas, shale-oil, and coal-bed methane formations. The new tool is able to detect approach to a distant parallel bed-boundary of contrasting resistivity that is either higher or lower than the borehole environment. This enables predictive geosteering if the tool is not installed...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, August 25–27, 2008
Paper Number: SPE-114649-MS
... The well WZ12-1-5 was drilled utilizing KCl/polymer system. When it came into the W II formation with the depth of 1957m, drilling operations were very difficult because of severe sloughing of the hard brittle shale. Reaming was indispensable and even the exclusive way to run into the hole, i.e...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, August 25–27, 2008
Paper Number: SPE-114673-MS
... presents new design features, guided by numerical predictions and the physical properties of actual PDC bit cuttings that reduce bit balling in PDC bits while drilling shales in water-based drilling muds. Validated by drilling simulator tests and field results, the new design criteria are shown to provide...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, November 13–15, 2006
Paper Number: SPE-102307-MS
... section of one PDC bit run was achieved. By applying new technology the section was drilled 13 days faster than the directional offsets constructed with roller cones with an estimated savings of US$258,364. drilling operation ROP torque roller cone Directional Drilling shale stability iadc...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, November 13–15, 2006
Paper Number: SPE-103842-MS
... reactive shales, shallow kick off depths and high build rates, unconsolidated sand stones interbedded with shales which are sensitive to mud weight and are prone to lost circulation. First few horizontal wells were drilled with conventional technology of positive displacement motor with silicate mud. Many...

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