公开(公告)号：US08430187B2

公开(公告)日：2013-04-30

申请号：US12708266

申请日：2010-02-18

Applicant: David D. Hearn

Inventor： David D. Hearn

IPC: E21B7/08 ,  E21B10/00

CPC classification number: E21B7/061 ,  E21B7/067 ,  E21B10/26

Abstract: Drilling a sidetrack wellbore out of the side of an existing wellbore utilizing a drillable billet having a path formed in the billet to lead a bi-centered drillbit to kick-out from the wellbore and form a sidetrack wellbore. The bi-centered bit is arranged for the lands of the pilot section to follow the path of the billet while the wings of the ream out a portion of the billet and also ream out the earth to form the full dimension sidetrack wellbore. The bi-centered bit is used to drill the sidetrack wellbore to the target zone so that the entire drilling process extends from the existing wellbore to the target zone without a mandatory withdrawal of the drillstring from the wellbore.

Abstract translation: 使用具有在坯料中形成的路径的可钻孔的坯料钻出现有井眼侧面的侧钻井，以引导双中心的钻孔从井筒中踢出并形成侧钻井筒。 双中心钻头安排在飞行员区域的土地上，以跟随钢坯的路径，同时将机翼的一部分弹出出来，并且还将地弹出，以形成全尺寸侧钻井筒。 双中心钻头用于将侧钻井眼钻到目标区域，使得整个钻井过程从现有的井眼延伸到目标区域，而不必将钻柱强制从钻井中撤出。

公开(公告)号：US20100147592A1

公开(公告)日：2010-06-17

申请号：US12635353

申请日：2009-12-10

Applicant: David D. Hearn ,  Lamar L. Gantt ,  Howard Gober

Inventor： David D. Hearn ,  Lamar L. Gantt ,  Howard Gober

IPC: E21B7/04

CPC classification number: E21B7/061

Abstract: A method and apparatus for forming a window in the wall of a tubular wellbore. In one embodiment described herein, a down hole apparatus for forming a window in the wall of a wellbore utilizing a plurality of tubing string sections and a thick tailpipe positioned at the down hole end of a tubing section.

Abstract translation: 一种用于在管状井眼的壁中形成窗口的方法和装置。 在本文所述的一个实施例中，一种用于在井眼的壁中形成窗口的井下设备，其利用多个管柱段和位于管段的井下端处的厚的尾管。

公开(公告)号：US4674580A

公开(公告)日：1987-06-23

申请号：US770147

申请日：1985-08-27

Applicant: Frank J. Schuh ,  David D. Hearn

Inventor： Frank J. Schuh ,  David D. Hearn

IPC: E21B7/04 ,  E21B17/10

CPC classification number: E21B17/10 ,  E21B7/04

Abstract: A means for substantially reducing the bending stresses, both tensional and compressional, in a standard-type length of drill pipe as it passes through a section of a wellbore that is deviated from vertical. The tool joints on the ends of drill pipe have outside diameters greater than that of the pipe body which act as supports for the pipe body against the wall of the wellbore in a deviated section. The bending stresses encountered by the drill pipe increase as the distance between these pipe supports increase. In the present invention, stress sleeves are affixed to the outer surface of the pipe body at equally spaced intervals between the tool joints to act as dummy tool joints thereby providing additional pipe supports which substantially reduce the bending stresses in the drill pipe.

Abstract translation: 一种用于当标准型长度的钻杆通过穿过从垂直方向偏离的井眼的一部分时，基本上减小张力和压缩的弯曲应力的装置。 钻杆末端的工具接头的外径大于管体的外径，该管体用作管体抵靠井眼在偏斜部分的壁上的支撑。 钻管遇到的弯曲应力随着这些管支架间距的增加而增加。 在本发明中，应力套筒以等间隔的间隔固定到管体的外表面上，以作为虚拟工具接头，从而提供额外的管道支撑件，其基本上减小了钻杆中的弯曲应力。

公开(公告)号：US20100307736A1

公开(公告)日：2010-12-09

申请号：US12796370

申请日：2010-06-08

Applicant: David D. Hearn ,  Lamar L. Gantt ,  Dan E. Venhaus ,  John G. Eller

Inventor： David D. Hearn ,  Lamar L. Gantt ,  Dan E. Venhaus ,  John G. Eller

IPC: E21B23/03 ,  E21B7/04

CPC classification number: E21B41/0035 ,  E21B7/061 ,  E21B10/00 ,  E21B29/06 ,  E21B33/12 ,  E21B33/16 ,  E21B43/10

Abstract: The present invention relates to drilling lateral wells or sidetrack wells from a primary wellbore to enhance the efficiency and productivity of oil and gas wells.

Abstract translation: 本发明涉及从主井眼钻井侧井或侧钻井，以提高油气井的效率和生产率。

公开(公告)号：US20100218996A1

公开(公告)日：2010-09-02

申请号：US12708266

申请日：2010-02-18

Applicant: David D. Hearn

Inventor： David D. Hearn

IPC: E21B7/08 ,  E21B7/04

CPC classification number: E21B7/061 ,  E21B7/067 ,  E21B10/26

Abstract: This invention relates to drilling a sidetrack wellbore out of the side of an existing wellbore utilizing a drillable billet having a path formed in the billet to lead a bi-centered drillbit to kick-out from the wellbore and form a sidetrack wellbore. The bi-centered bit is arranged for the lands of the pilot section to follow the path of the billet while the wings of the ream out a portion of the billet and also ream out the earth to form the full dimension sidetrack wellbore. The bi-centered bit is used to drill the sidetrack wellbore to the target zone so that the entire drilling process extends from the existing wellbore to the target zone without a mandatory withdrawal of the drillstring from the wellbore. Tripping time is therefore less and drill time and rig time would inherently be less resulting in lower costs and increased profitability.

Abstract translation: 本发明涉及利用具有在坯料中形成的路径的可钻孔坯料将现有井筒的侧面钻出侧钻井筒，以引导双中心钻孔从井筒中踢出并形成侧钻井筒。 双中心钻头安排在飞行员区域的土地上，以跟随钢坯的路径，同时将机翼的一部分弹出出来，并且还将地弹出，以形成全尺寸侧钻井筒。 双中心钻头用于将侧钻井眼钻到目标区域，使得整个钻井过程从现有的井眼延伸到目标区域，而不必将钻柱强制从钻井中撤出。 因此，跳闸时间较短，钻取时间和钻机时间本来会较少，从而降低成本并提高盈利能力。

公开(公告)号：US5794697A

公开(公告)日：1998-08-18

申请号：US757857

申请日：1996-11-27

Applicant: John R. Wolflick ,  James L. Cawvey ,  Jerry L. Brady ,  John R. Whitworth ,  David D. Hearn

Inventor： John R. Wolflick ,  James L. Cawvey ,  Jerry L. Brady ,  John R. Whitworth ,  David D. Hearn

IPC: E21B43/18 ,  E21B43/38 ,  E21B43/40

CPC classification number: E21B43/18 ,  E21B43/385

Abstract: A system and a method for producing increased quantities of oil from an oil well producing a mixture of oil and gas through a well bore penetrating an oil bearing formation containing a gas cap zone and an oil bearing zone by separating at least a portion of the gas from the mixture of oil and gas downhole in an auger separator to produce a separated gas and an oil enriched mixture; compressing at least a portion of the separated gas downhole to a pressure greater than the pressure in the gas cap zone to produce a compressed gas; and, injecting the compressed gas into the gas cap and, recovering at least a major portion of the oil enriched mixture.

Abstract translation: 一种用于从油井产生更多量的油的系统和方法，其产生油和气体的混合物，穿过穿透含有气帽区域和含油区域的含油地层的井眼，通过分离至少一部分气体 从螺旋分离器中的井下油和油的混合物产生分离的气体和富含油的混合物; 将井下的分离气体的至少一部分压缩至大于气帽区域中的压力的​​压力以产生压缩气体; 并且将压缩气体注入气帽并回收至少大部分富油混合物。

公开(公告)号：US5113703A

公开(公告)日：1992-05-19

申请号：US564932

申请日：1990-08-09

Applicant: David D. Hearn

Inventor： David D. Hearn

IPC: E21B47/08 ,  E21B47/09

CPC classification number: E21B47/08 ,  E21B47/091

Abstract: The lower end of a wellbore tubing string or a change in diameter of a wellbore component may be sensed by an apparatus connectable to the end of an elongated coilable tubing for insertion into the tubing string and responsive to movement of the apparatus into or out of the end of the tubing string to effect a change in flow of fluid being conducted through the coilable tubing. The apparatus includes opposed arms engageable with the bore of the tubing string and engageable with a piston member to effect closure of ports in the apparatus to change the flow of fluid through the tubing in response to movement of the arms into or out of the end of the tubing string. Alternate embodiments include bypass passages for conducting pressure fluid to a packer or wellbore tool.

Abstract translation: 井眼管柱的下端或井筒部件的直径变化可以由可连接到细长的可卷绕管的端部的装置来感测，用于插入油管柱中并且响应于装置进入或离开 油管柱的端部以实现通过可卷曲管道传导的流体的流动的变化。 该装置包括可与管柱的孔接合的相对的臂，并可与活塞构件接合，以实现装置中的端口的闭合，以响应臂的移动而改变通过管的流体流入或移出 油管柱。 替代实施例包括用于将压力流体传导到封隔器或井筒工具的旁路通道。

公开(公告)号：US4744420A

公开(公告)日：1988-05-17

申请号：US76565

申请日：1987-07-22

Applicant: John C. Patterson ,  David D. Hearn

Inventor： John C. Patterson ,  David D. Hearn

IPC: E21B7/18 ,  E21B17/18 ,  E21B21/12 ,  E21B37/00 ,  E21B41/00

CPC classification number: E21B41/0078 ,  E21B17/18 ,  E21B21/12 ,  E21B37/00 ,  E21B7/18

Abstract: Sand is evacuated from horizontal and vertical wellbores utilizing a jet pump connected to the distal end of a concentric tubing string which is insertable in the wellbore and extendable from the earth's surface or from a seal member providing a crossover flow path between the wellbore annulus above the seal member and the inner tubing member of the concentric tubing string. The jet pump includes a plurality of nozzles for ejecting evacuation of fluid into the wellbore to agitate and entrain accumulated solids for flow into a pump inlet cavity and to be propelled out of the pump by a portion of the evacuation fluid acting as a jet pump power fluid. The inner tubing member may be coilable tubing which is inserted into the outer tubing member after the jet pump has been lowered into the wellbore. An upper portion of the concentric tubing string may be made up of preassembled sections of the inner and outer tubing members. One embodiment of the seal member is an inflatable packer utilizing evacuation fluid as the seal element inflation medium.

Abstract translation: 使用连接到同心管柱的远端的喷射泵将沙子从水平和垂直井筒排出，所述喷射泵可插入井眼中并且可从地球表面或从密封构件延伸，在密封构件之间提供交叉流动路径， 密封构件和同心管柱的内管构件。 喷射泵包括多个喷嘴，用于将流体排出到井筒中以搅拌和夹带积聚的固体以进入泵入口腔，并且通过用作喷射泵功率的排出流体的一部分被推出泵 流体。 内管构件可以是在喷射泵已经下降到井筒中之后插入到外管构件中的可卷曲管。 同心管柱的上部可以由内管和外管构件的预组装部分构成。 密封构件的一个实施例是利用排出流体作为密封元件充气介质的充气封隔器。

公开(公告)号：US4653598A

公开(公告)日：1987-03-31

申请号：US674377

申请日：1984-11-23

Applicant: Frank J. Schuh ,  David D. Hearn

Inventor： Frank J. Schuh ,  David D. Hearn

IPC: E21B7/06 ,  E21B7/08 ,  E21B17/16

CPC classification number: E21B17/16 ,  E21B7/068

Abstract: In deep drainhole drilling, a specially oriented drill collar of generally elliptic cross section is combined with a drill bit, a downhole motor and means adapted to deflect the bit to drill the build section of the drainhole curving at a medium angle of 2.degree. to 50.degree. per hundred feet. Preferably, the drill collar is at least twenty feet long. The elliptic drill collar is oriented in a manner such that the minor axis of the ellipse lies generally in the direction of the intended curve of the build interval. For the desired vertical build, this places the locus of the minimum axis of the ellipse toward the vertical and the locus of major axis toward the horizontal when the curved interval of the drainhole approaches horizontal. Preferably, the minor axis is at least twenty percent shorter than the major axis. An elliptic drill collar combined and oriented in this manner will produce significant torsional resistance because the bending moment required to deflect the collar about its minimum axis is significantly less than with a collar deflected about its major axis. This stabilizes the orientation of the assembly during drilling operations. The minor axis may be misaligned with direction of build to generate forces to counteract drill motor reactions. The deflecting means may be a bent motor housing, a bent sub, a bent elliptic drill collar or any other suitable deflecting means.

Abstract translation: 在深井钻孔中，一般为椭圆截面的特殊定向钻铤与钻头，井下电机和井下电机相结合，适用于使钻头以2°至50°的中等角度钻出排水孔弯曲构造段 DEG每百英尺 优选地，钻铤至少二十英尺长。 椭圆形钻铤以这样的方式定向，使得椭圆的短轴通常位于构建间隔的预期曲线的方向上。 对于所需的垂直构造，当排水孔的弯曲间隔接近水平时，将椭圆的最小轴线的轨迹朝垂直方向和长轴的轨迹朝水平方向放置。 优选地，短轴比长轴至少短20％。 以这种方式组合和定向的椭圆形钻铤将产生显着的扭转阻力，因为使套环围绕其最小轴线偏转所需的弯矩显着小于围绕其主轴线偏转的轴环。 这在钻井操作期间稳定了组件的定向。 短轴可能与构造方向不对准，以产生抵抗钻机电机反作用的力。 偏转装置可以是弯曲的马达壳体，弯曲的副，弯曲的椭圆形钻铤或任何其它合适的偏转装置。

公开(公告)号：US06318480B1

公开(公告)日：2001-11-20

申请号：US09461306

申请日：1999-12-15

Applicant: David D. Hearn

Inventor： David D. Hearn

IPC: E21R708

CPC classification number: E21B7/061 ,  E21B7/068

Abstract: A method and apparatus for drilling a lateral from a primary wellbore having a short radius-of-curvature. The lateral is drilled by a downhole drilling unit which differs from prior art units of this type in that instead of connecting the drill bit directly to the downhole motor, a length of flexible drill pipe is used to connect the bit to the rotary power output of the motor. This length of flexible drill pipe below the downhole motor allows much larger build-up angles (e.g. 1-3° per foot) which, in turn, reduces the time and expense for short-radius laterals and increase the accuracy of placement of the lateral within the zone of interest (e.g. production formation).

Abstract translation: 一种用于从具有短曲率半径的主井眼钻出横向的方法和装置。 侧面由井下钻孔单元钻出，与现有技术的这种类型的单元不同，代替将钻头直接连接到井下马达，使用一定长度的柔性钻杆将钻头连接到旋转动力输出 电机。 井下电机下方的这种柔性钻杆的长度允许更大的积木角度（例如每英尺1-3°），这又减少了短半径侧向的时间和费用，并增加了侧向放置的准确性 在兴趣区域内（如生产形成）。