| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 10/05/2011 | CN202000891U Guider |
| 10/05/2011 | CN202000890U Multi-shaft equal-wall thickness continuous wall drilling machine |
| 10/05/2011 | CN101440694B Casing tool capable of being pressed and circulated |
| 10/05/2011 | CN101035961B Sleeve arrangement |
| 10/04/2011 | US8028767 Expandable stabilizer with roller reamer elements |
| 10/04/2011 | US8028764 Methods and apparatuses for estimating drill bit condition |
| 10/04/2011 | US8028763 Downhole tool |
| 10/04/2011 | CA2614809C System and method for dynamic sealing around a drill stem |
| 10/04/2011 | CA2542964C Instrumented internal blowout preventer valve for measuring drill string drilling parameters |
| 09/29/2011 | WO2011119170A1 Control system and interface a tunneling apparatus |
| 09/29/2011 | WO2011048368A3 Wellbore completion |
| 09/29/2011 | US20110232970 Coiled tubing percussion drilling |
| 09/29/2011 | US20110232969 Downhole tool deactivation and re-activation |
| 09/29/2011 | US20110232968 Borehole Drilling Optimization With Multiple Cutting Structures |
| 09/29/2011 | US20110232967 Formation Dip Geo-Steering Method |
| 09/29/2011 | US20110232928 Transmission for outdoor power equipment |
| 09/28/2011 | CN201991455U 钻完井专用导向柔性筛管 Drilling and Completion dedicated guide the flexible screen |
| 09/28/2011 | CN201991444U 一种开窗侧钻装置 A sidetrack device window |
| 09/28/2011 | CN201991443U 全液压控制桩机 Full hydraulic control pile |
| 09/28/2011 | CN201991442U 油电两用旋挖钻机 Oil and electricity dual rotary drilling rig |
| 09/28/2011 | CN201991441U 一种车载螺旋打桩机 A vehicle-mounted helical piling machine |
| 09/28/2011 | CN201991440U 凿岩台车推进器多维摆动装置 Jumbo propeller multidimensional swing device |
| 09/28/2011 | CN201991439U 新型石油勘探钻机 The new oil exploration rig |
| 09/28/2011 | CN201991438U 单变幅油缸式旋挖钻机 Single luffing cylinder type rotary drilling rig |
| 09/28/2011 | CN201989872U 潜孔钻机底盘加固装置 Submersible drilling rig chassis stiffening means |
| 09/28/2011 | CN201989853U 爬行移动式拖车车架 Crawling mobile trailer frame |
| 09/28/2011 | CN102203373A Method and apparatus for fusion drilling |
| 09/28/2011 | CN102199991A Drilling-fixing integrated device and method for yolk coal terrane |
| 09/28/2011 | CN102199990A Self-propelled device for moving whole body of drilling machine |
| 09/28/2011 | CN101748975B Fixing seat for rotary drilling rig and rotary drilling rig |
| 09/28/2011 | CN101624898B Rock-entering vibrating device for rotary drilling machine |
| 09/28/2011 | CN101363306B Pneumatic anchor rod hammer drill |
| 09/27/2011 | US8025111 Agitator for a drill and related methods |
| 09/23/2011 | CA2818049A1 Diverting system and method of running a tubular |
| 09/23/2011 | CA2724796A1 Diverting tool |
| 09/22/2011 | WO2011114167A2 Drill bit |
| 09/22/2011 | WO2011085286A3 Downhole downlinking system employing a differential pressure transducer |
| 09/22/2011 | WO2011058307A3 Downhole tractor |
| 09/22/2011 | US20110231149 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 09/22/2011 | US20110226532 Insert for an attack tool, method for making same and tools incorporating same |
| 09/22/2011 | CA2793678A1 Drill bit |
| 09/21/2011 | EP2366055A2 Subsea drilling with casing |
| 09/21/2011 | CN201982077U Gas-water separator for coal mine gallery drilling rig |
| 09/21/2011 | CN201982017U 用于切削钻机的防卡钻杆装置 Anti-card devices for cutting drill rig |
| 09/21/2011 | CN201982016U 生物核酸酶柔管水平侧钻油藏改造装置 Biological nuclease soft tube level sidetrack reservoir reconstruction device |
| 09/21/2011 | CN201982015U 摆动式挖坑机 Swing digging machine |
| 09/21/2011 | CN201982014U 一种煤矿用钻机的水平角度调整装置 A coal mine with a horizontal angle adjusting device rig |
| 09/21/2011 | CN201982013U 反循环钻机钻孔、锤击成孔、扩孔、清渣的施工设备 Reverse circulation drilling rig drilling, hammering into the hole, reaming, slag construction equipment |
| 09/21/2011 | CN201982012U 一种浮动底盘折臂液压钻车 One kind of floating chassis folding arm hydraulic drilling |
| 09/21/2011 | CN201982011U 轨道式钻孔台车 Orbital Drilling trolley |
| 09/21/2011 | CN1975094B Steel pipe for burying and expansion and burying method of oil well steel pipe |
| 09/21/2011 | CN102191915A Resonant pulse vibrating drilling device |
| 09/21/2011 | CN102191914A Full-hydraulic integrated multipurpose cutting driller |
| 09/21/2011 | CN101761350B Rapid drilling device of small-bore tunnel bottom plate drill |
| 09/21/2011 | CN101705788B Construction method using blowout plug to shield oblique drilling hole |
| 09/21/2011 | CN101210480B Four-in-one drilling tool |
| 09/20/2011 | CA2649574C Dispersive riserless drilling fluid |
| 09/20/2011 | CA2557189C Method and apparatus and program storage device adapted for automatic drill string design based on wellbore geometry and trajectory requirements |
| 09/20/2011 | CA2545354C Method of reducing sand production from a wellbore |
| 09/20/2011 | CA2475602C System for forming a window and drilling a sidetrack wellbore |
| 09/15/2011 | WO2011112324A2 Feed chain automatic tensioner |
| 09/15/2011 | WO2011112275A1 Wear pad adjustment assembly |
| 09/15/2011 | WO2011112274A1 Breakout wrench system |
| 09/15/2011 | US20110220420 Feed Chain Automatic Tensioner |
| 09/15/2011 | US20110220417 Drill bits and methods of drilling curved boreholes |
| 09/15/2011 | US20110220416 Centralized Bi-Center Reamer and Method of Use |
| 09/15/2011 | US20110220415 Ultra-low friction coatings for drill stem assemblies |
| 09/15/2011 | US20110220414 Multi-coupling reduced length measure while drilling apparatus |
| 09/15/2011 | US20110220413 Method and device for creating a deep borehole |
| 09/15/2011 | US20110220409 Method and device for fusion drilling |
| 09/15/2011 | DE102006059606B4 Reversible Vorrichtung mit einer Schlageinrichtung zum Herstellen von Erdbohrungen mit einem Überlastungsschutz und ein Verfahren zum Herstellen von Erdbohrungen. Reversible device with an impact device for creating Erdbohrungen with an overload protection and a method of making earth bores. |
| 09/15/2011 | DE10115233C5 Horizontalbohranlage Horizontal drilling rig |
| 09/15/2011 | CA2734042A1 Vibrating downhole tool and methods |
| 09/14/2011 | CN201972644U 一种六级分支井窗口连接装置 One kind of six wells window connecting device |
| 09/14/2011 | CN201972635U 一种水平井螺旋式冲砂笔尖 A horizontal wells spiral sand washing nib |
| 09/14/2011 | CN201972601U 水钻防水定位承接装饰环 Rhinestone Waterproof positioned to undertake decoration ring |
| 09/14/2011 | CN201972600U 一种用于明礁处理的钻孔装置 A drilling apparatus for processing Ming reef |
| 09/14/2011 | CN201972599U 一种垂直钻井工具 The vertical drilling tool |
| 09/14/2011 | CN201972598U 双层套管开窗实心导斜器 Double solid guide ramp filter casing window |
| 09/14/2011 | CN201972597U 钻塔前侧置塔机履一体式岩芯钻机 Front side-mounted rigs crawler crane-one core drilling rig |
| 09/14/2011 | CN201972596U Vehicular rotary drilling rig |
| 09/14/2011 | CN1833089B Device for transporting particles of a magnetic material and tool comprising such a device |
| 09/14/2011 | CN102187046A Method and system for advancement of a borehole using a high power laser |
| 09/14/2011 | CN102182416A Multifunctional high-pressure milling cone |
| 09/14/2011 | CN102182415A Efficient milling cone with guide tool |
| 09/14/2011 | CN102182411A Method for increasing injection pressure of shaft bottom drilling fluid by use of bit pressure fluctuation |
| 09/14/2011 | CN102182404A Cast-in-situ tubular pile rotary drilling rig capable of forming annular hole and piling method |
| 09/14/2011 | CN102182403A Drilling type well completion technology for fishbone branch borehole |
| 09/14/2011 | CN102182402A Gas discharge drilling machine capable of positioning quickly |
| 09/14/2011 | CN102182401A Folding type fully hydraulic crawler pile driver |
| 09/14/2011 | CN102182400A Double-guide-rail drill wagon for coal mine |
| 09/14/2011 | CN102182399A Construction method and equipment for reverse circulation drill to drill hole, hammer to form hole, expand hole and remove slag |
| 09/14/2011 | CN102182398A Composite clay passage and construction method thereof |
| 09/14/2011 | CN102182397A Multi-angle coal petrography drilling machine |
| 09/14/2011 | CN102182396A Core drilling machine power head capable of keeping off opening orifice |
| 09/13/2011 | US8016050 Methods and apparatuses for estimating drill bit cutting effectiveness |
| 09/13/2011 | US8016049 Method and apparatus for installing a borehole heat exchanger in the earth |
| 09/13/2011 | US8016033 Continuous flow drilling systems and methods |
| 09/13/2011 | CA2557868C Rotating systems associated with drill pipe for conveying electrical power to downhole systems |
| 09/13/2011 | CA2514136C Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly |