The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform

T.c. Chidsey - One of the best experts on this subject based on the ideXlab platform.

  • Horizontal Drilling potential in Utah
    AAPG Bulletin, 1991
    Co-Authors: T.c. Chidsey
    Abstract:

    A minimum of 18 reservoirs in both producing and frontier areas of Utah are potential targets for Horizontal Drilling. Horizontal Drilling can enhance production in some active fields, revive production in abandoned fields and discover new fields in areas traditionally overlooked for oil and gas. Many Utah oil and gas fields produce from naturally fractured reservoirs, a principal objective for Horizontal Drilling. The Grassy Trail Creek field (Carbon and Emery Counties) is an example of an older field that was revived using Horizontal Drilling. Between 1982 and 1984, 18 wells with 68 short-radius Horizontal laterals were drilled in the Triassic Moenkopi Formation. The eight best wells were completed for an average rate of 127 BOPD per well, twice that of conventional drilled wells in the field. Using current technology, fields within the Paradox basin, Uinta basin, and Overthrust belt are also good candidates for Horizontal Drilling. In the northern Paradox basin, six fields have produced oil from the Cane Creek zone, a fractured organic-rich shale in the Pennsylvanian Paradox Formation. The active Long Canyon field has produced nearly a million barrels of high gravity, low sulfur oil. Neighboring abandoned fields has steep production declines and no associated water, suggesting thatmore » additional untapped reservoirs still exist. In the Uinta basin, fracture reservoirs in the Green River and Wasatch formations are the principal candidates. Other potential Utah targets include thin reservoirs in the Green River, Ferron, Kalota, and Kaibab formations, algal mounds in the Paradox Formation; and coal-bed methane-bearing units within the Cretaceous Blackhawk and Straight Cliff formations.« less

Mark H. Holtz - One of the best experts on this subject based on the ideXlab platform.

  • Opportunities for Horizontal Drilling in Texas
    AAPG Bulletin, 1991
    Co-Authors: Robert J. Finley, Stephen E. Laubach, Noel Tyler, Mark H. Holtz
    Abstract:

    To date, Horizontal Drilling in Texas has been effective in achieving production increases where natural fracturing is significant, as in the Pearsall field of the Austin Chalk trend of south Texas. Projected average ultimate recoveries of 500,000 bbl of oil and 500 mmcf of gas per Horizontal well compare with 75,000 bbl and 82 mmcf for vertical wells in that field. In addition to increasing production from naturally fractured reservoirs, Horizontal Drilling applications can enhance production where coning problems exist, where the reservoir zone is thin, where a gravity drainage mechanism exists, or where macroscale heterogeneity can be overcome to produce from complex, compartmentalized reservoirs. Major Texas reservoirs have been classified into 47 oil plays and 73 gas plays that are useful in evaluating the application of Horizontal Drilling. Geological character amenable to Horizontal Drilling is evident in at least 10 oil plays containing 144 reservoirs, more than two Bbl of proved reserves, and eight Bbbl of uncovered mobile oil. At least seven gas plays containing more than 124 reservoirs with cumulative production of more than 19.7 tcf are amenable to Horizontal Drilling. Tight gas reservoirs may benefit from multiple hydraulic fracture treatments from Horizontal well sections drilled parallel tomore » the minimum Horizontal stress direction. Although play analysis defines general suitability, applications of Horizontal Drilling depend upon geologic, engineering, and, most importantly, economic assessments of specific prospects. Increased understanding of fractured reservoirs and of scales of reservoir heterogeneity will enhance future applications.« less

Yurui Zhang - One of the best experts on this subject based on the ideXlab platform.

  • GAS RESERVOIR EVALUATION FOR UNDERBALANCED Horizontal Drilling by
    2016
    Co-Authors: Yingfeng Meng, Na Wei, Guilin Xiao, Yurui Zhang
    Abstract:

    A set of surface equipment for monitoring the parameters of fluid and pressure while Drilling was developed, and mathematical models for gas reservoir seepage and wellbore two-phase flow were established. Based on Drilling operation pa-rameters, well structure and monitored parameters, the wellbore pressure and the gas reservoir permeability could be predicted theoretically for underbalanced Horizontal Drilling. Based on the monitored gas production along the well depth, the gas reservoir type could be identified. Key words: underbalanced Drilling, Horizontal well, surface monitoring, permeability evaluation, media typ

  • Research Article Cuttings Transport Models and Experimental Visualization of Underbalanced Horizontal Drilling
    2014
    Co-Authors: Yurui Zhang
    Abstract:

    permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Aerated underbalanced Horizontal Drilling technology has become the focus of the Drilling industry at home and abroad, and one of the engineering core issues is the Horizontal borehole cleaning. Therefore, calculating the minimum injection volume of gas and liquid accurately is essential for the construction in aerated underbalanced Horizontal Drilling. This paper establishes a physical model of carrying cuttings and borehole cleaning in wellbore of Horizontal well and a critical transport mathematical model according to gas-liquid-solid flow mechanism and large plane dunes particle transport theory. 1

  • gas reservoir evaluation for underbalanced Horizontal Drilling
    Thermal Science, 2014
    Co-Authors: Yingfeng Meng, Na Wei, Guilin Xiao, Yurui Zhang
    Abstract:

    A set of surface equipment for monitoring the parameters of fluid and pressure while Drilling was developed, and mathematical models for gas reservoir seepage and wellbore two-phase flow were established. Based on Drilling operation parameters, well structure and monitored parameters, the wellbore pressure and the gas reservoir permeability could be predicted theoretically for underbalanced Horizontal Drilling. Based on the monitored gas production along the well depth, the gas reservoir type could be identified.

  • cuttings transport models and experimental visualization of underbalanced Horizontal Drilling
    Mathematical Problems in Engineering, 2013
    Co-Authors: Na Wei, Yingfeng Meng, Liping Wan, Yurui Zhang
    Abstract:

    Aerated underbalanced Horizontal Drilling technology has become the focus of the Drilling industry at home and abroad, and one of the engineering core issues is the Horizontal borehole cleaning. Therefore, calculating the minimum injection volume of gas and liquid accurately is essential for the construction in aerated underbalanced Horizontal Drilling. This paper establishes a physical model of carrying cuttings and borehole cleaning in wellbore of Horizontal well and a critical transport mathematical model according to gas-liquid-solid flow mechanism and large plane dunes particle transport theory.

Robert J. Finley - One of the best experts on this subject based on the ideXlab platform.

  • Opportunities for Horizontal Drilling in Texas
    AAPG Bulletin, 1991
    Co-Authors: Robert J. Finley, Stephen E. Laubach, Noel Tyler, Mark H. Holtz
    Abstract:

    To date, Horizontal Drilling in Texas has been effective in achieving production increases where natural fracturing is significant, as in the Pearsall field of the Austin Chalk trend of south Texas. Projected average ultimate recoveries of 500,000 bbl of oil and 500 mmcf of gas per Horizontal well compare with 75,000 bbl and 82 mmcf for vertical wells in that field. In addition to increasing production from naturally fractured reservoirs, Horizontal Drilling applications can enhance production where coning problems exist, where the reservoir zone is thin, where a gravity drainage mechanism exists, or where macroscale heterogeneity can be overcome to produce from complex, compartmentalized reservoirs. Major Texas reservoirs have been classified into 47 oil plays and 73 gas plays that are useful in evaluating the application of Horizontal Drilling. Geological character amenable to Horizontal Drilling is evident in at least 10 oil plays containing 144 reservoirs, more than two Bbl of proved reserves, and eight Bbbl of uncovered mobile oil. At least seven gas plays containing more than 124 reservoirs with cumulative production of more than 19.7 tcf are amenable to Horizontal Drilling. Tight gas reservoirs may benefit from multiple hydraulic fracture treatments from Horizontal well sections drilled parallel tomore » the minimum Horizontal stress direction. Although play analysis defines general suitability, applications of Horizontal Drilling depend upon geologic, engineering, and, most importantly, economic assessments of specific prospects. Increased understanding of fractured reservoirs and of scales of reservoir heterogeneity will enhance future applications.« less

J.w. Harbaugh - One of the best experts on this subject based on the ideXlab platform.

  • Exploitation of oil in a volcanic cone by Horizontal Drilling in the Elaine field, south Texas
    AAPG Bulletin, 1991
    Co-Authors: P.a. Martinez, P.l. Kushner, J.w. Harbaugh
    Abstract:

    The Uvalde volcanic field west and southwest of San Antonio contains many buried volcanic cones that offer attractive places to exploit with Horizontal Drilling. These buried cones were formed by eruption of basaltic flows and cinders during the Cretaceous when the Austin Chalk and immediately overlying strate were deposited. The cones vary in size, some being as much as 2 mi in diameter and 1000 ft in vertical dimension. During eruptions, flows and ejecta reacted with sea water, producing intermixtures of basaltic material and limestone. These cones provide attractive targets for oil exploration. The Elaine field about 90 mi southwest of San Antonio is associated with a buried volcanic cone that is now being exploited with Horizontal Drilling. Horizontal Drilling and Production, Inc., ('HDP') drilled the Autumn 1 as the initial Horizontal well at Elaine. A vertical hole was drilled through the cone and underlying Austin Chalk, reconfirming the presence of the oil zone at the contact between volcanics and chalk. Moving back up the hole, a cement plug was set within the volcanics, and a Horizontal hole was directed on a N 70W azimuth. The inclined hole's vertical angle had progressively decreased with distance to about 30{degree} from themore » Horizontal when the oil zone was reentered. The hole's inclination continued to decrease within the oil zone, becoming Horizontal after about 600 ft. With further distance, the hole passed beneath the oil zone, where its inclination was then reversed so that it climbed gradually and reentered the oil zone before reaching its terminal distance of 1500 Horizontal feet. The well was completed on August 17, 1990, with an indicated initial production of 1609 BOPD.« less