• wells
  • Han dynasty oil wells made by percussion drilling was effective but only reached 10 meters deep and 100 meters by the 10th century. (wikipedia.org)
  • By the 16th century, the Chinese were exploring and drilling oil wells more than 2000 feet deep. (wikipedia.org)
  • North Drilling Company (Persian: حفاری شمال‎) is an Iranian company specialized in drilling oil and gas wells and its services in all regions of Iran and world, to global customers. (wikipedia.org)
  • Drilling engineers design and implement procedures to drill wells as safely and economically as possible. (wikipedia.org)
  • Drilling engineers are in charge of the process of planning and drilling the wells. (wikipedia.org)
  • The ancient Chinese developed advanced sinking wells and were the first civilization to use a well-drilling machine and to use bamboo well casings to keep the holes open. (wikipedia.org)
  • Due to the high number of wells that have been drilled, information from an adjacent well is most often used to make the appropriate selection. (wikipedia.org)
  • Tricone bit for well drilling (medium worn-out) PDC bit for well drilling Multiple Tricone Bits Tricone Bit Drill Bit Damaged Drill Bit, pieces missing on the left hand cone Mud log in process, a common way to study the lithology when drilling oil wells Evaluation of the dull bit grading is done by a uniform system promoted by the International Association of Drilling Contractors (IADC). (wikipedia.org)
  • The 228-metre long drillships will be able to operate at water depths up to 3,650 m (12,000 ft) and will be capable of drilling wells of more than 12,000 m (40,000 ft) deep. (wikipedia.org)
  • Directional drilling (or slant drilling) is the practice of drilling non-vertical wells. (wikipedia.org)
  • This realization was quite slow, and did not really grasp the attention of the oil industry until the late 1920s when there were several lawsuits alleging that wells drilled from a rig on one property had crossed the boundary and were penetrating a reservoir on an adjacent property. (wikipedia.org)
  • citation needed] Initially, proxy evidence such as production changes in other wells was accepted, but such cases fueled the development of small diameter tools capable of surveying wells during drilling. (wikipedia.org)
  • The innovation allowed rapid drilling of a series of slanted wells. (wikipedia.org)
  • This capacity to quickly drill multiple relief wells and relieve the enormous gas pressure was critical to extinguishing the Conroe fire. (wikipedia.org)
  • This type is usually not advised on oil wells due to the risks of losing blades, but is regularly used when drilling water wells or on low-cost oilfields. (wikipedia.org)
  • Gresh said that a 1989 DEP statement on frequency of well inspections isn't a law, just a policy, and that drilling companies also are required to inspect their own wells and report any problems. (yahoo.com)
  • The 1989 document states that the agency intends to inspect wells "at least once during each of the phases of siting, drilling, casing, cementing, completing, altering and stimulating a well. (yahoo.com)
  • 2000
  • Well logging Mud logging MWD (measurement while drilling) LWD (logging while drilling) Geosteering Expandable tubular technology Hyne, N.J. (2000), Nontechnical Guide to Petroleum Geology, Exploration, Drilling and Production Journal of Petroleum Technology, Society of Petroleum Engineers "http://www.energy4me.org/careers/careers.htm.[permanent dead link]" Society of Petroleum Engineers. (wikipedia.org)
  • However, Hughes still held 40% of the world's drill bit market in 2000. (wikipedia.org)
  • 1970s
  • In the 1970s, outside of the oil and gas industry, roller bits using mud circulation were replaced by the first pneumatic reciprocating piston Reverse Circulation (RC) drills, and became essentially obsolete for most shallow drilling, and are now only used in certain situations where rocks preclude other methods. (wikipedia.org)
  • IADC
  • Managed Pressure Drilling (MPD) is defined by the International Association of Drilling Contractors (IADC) as "an adaptive drilling process used to more precisely control the annular pressure profile throughout the wellbore. (wikipedia.org)
  • shale
  • Many other chemicals (e.g. potassium formate) are added to a WBM system to achieve various effects, including: viscosity control, shale stability, enhance drilling rate of penetration, cooling and lubricating of equipment. (wikipedia.org)
  • But now, natural gas producers are deploying a new gas drilling method called high-volume horizontal hydraulic fracturing to release gas locked in untapped shale formations. (ewg.org)
  • Gas drilling in shale deposits requires heavy use of chemicals. (ewg.org)
  • The Marcellus Shale formation exists across much of the state, and is the target of most new drilling in Pennsylvania. (yahoo.com)
  • Fracking
  • Unless high volume fracking and drilling is barred near drinking water sources and carefully regulated elsewhere, gas production will pose an expanding threat to homes, property values and water supplies. (ewg.org)
  • ovarian
  • Ovarian drilling, also known as multiperforation or laparoscopic ovarian diathermy, is a surgical technique of puncturing the membranes surrounding the ovary with a laser beam or a surgical needle using minimally invasive laparoscopic procedures. (wikipedia.org)
  • Minimally invasive ovarian drilling procedures have replaced wedge resections. (wikipedia.org)
  • Ovarian drilling is preferred to wedge resection because cutting in to the ovary can cause adhesions which may complicate postoperative outcomes. (wikipedia.org)
  • Ovarian drilling and ovarian wedge resection are treatment options to reduce the amount of androgen producing tissue in women with Polycystic Ovarian Syndrome (PCOS). (wikipedia.org)
  • Laparoscopic ovarian drilling (LOD) may improve the effectiveness of other ovulation induction treatments and results in lower multiple pregnancy rates than other treatment options like gonadotropins. (wikipedia.org)
  • Ovarian drilling is a surgical alternative to CC treatment or recommended for women with WHO Group II ovulation disorders. (wikipedia.org)
  • If patients do not become pregnant 6 months after ovulation has been reestablished from ovarian drilling treatment, drug treatments may be reintroduced or in vitro fertilization (IVF) may be considered. (wikipedia.org)
  • Circulating and intrafollicular levels of anti-mullerian hormone (AMH), which can help quantify recruitable ovarian follicle activity, are reduced after laparoscopic ovarian drilling in women with PCOS. (wikipedia.org)
  • When the clinician determines that ovarian drilling is appropriate and the woman decides to undergo this treatment, consent is obtained. (wikipedia.org)
  • Ovarian drilling is performed laparoscopically and either transumbilical (culdoscopy) or transvaginal (fertiloscopy). (wikipedia.org)
  • Though preferable to creating incisions on the ovary, ovarian drilling does have some risks. (wikipedia.org)
  • Transvaginal hydrolaparoscopy (THL) ovarian drilling may minimize the risk of iatrogenic adhesion formation and decreased ovarian reserve (DOR), which can impinge upon fertility. (wikipedia.org)
  • I have a lap scheduled for next week and my RE brought up the option of doing ovarian drilling at the same time. (inciid.org)
  • wastewater
  • In 2008, Pennsylvania authorities took remedial measures after determining that a water pollution control plant had accepted drilling wastewater that contaminated the Monongahela River. (ewg.org)
  • bits
  • For fluted drill bits, any chips are removed via the flutes. (wikipedia.org)
  • Precision incorporates Precision becomes the majority shareholder in United Diamond Ltd., which designs, manufactures, rents and sells polycrystalline diamond compact (PDC) drill bits. (wikipedia.org)
  • RC drilling proved much faster and more efficient, and continues to improve with better metallurgy, deriving harder, more durable bits, and compressors delivering higher air pressures at higher volumes, enabling deeper and faster penetration. (wikipedia.org)
  • The superior wear performance of PDC bits gradually eroded the dominance of roller cone bits and early in this century PDC drill bit revenues overtook those of roller cone bits. (wikipedia.org)
  • Two different types of drill bits exist: fixed cutter and roller cone. (wikipedia.org)
  • Until 2006, market share was divided primarily among Hughes Christensen, Security-DBS (now Halliburton Drill Bits and Services), Smith Bits (a subsidiary of Schlumberger), and REEDHycalog (acquired by NOV in 2008). (wikipedia.org)
  • For this purpose hollow paper drill bits are clamped into a driven spindle which drills into the pile of paper. (wikipedia.org)
  • Depending on the type of paper drill either the paper drill bits are lowered into the pile or the table is lifted. (wikipedia.org)
  • company
  • In 2009, SADRA launched a domestically built semi-floatable drilling rig for the Caspian Sea owned by NIOC (National Iranian Oil Company). (wikipedia.org)
  • Iran-Alborz (from 2010 called Iran Amirkabir) is operated by Iran North Drilling Co. North Drilling Company and China Petroleum Technology Development Corporation (CPTDC) signed a $143 million contract to set up a drilling rig in the Persian Gulf by 2011. (wikipedia.org)
  • Drilling engineers are often degreed as petroleum engineers, although they may come from other technical disciplines (e.g., mechanical engineering or geology) and subsequently be trained by an oil and gas company. (wikipedia.org)
  • Aker ASA, through its wholly owned subsidiary Aker Capital ASA, made a voluntary acquisition of a majority stake in Aker drilling, which subsequently led to the de-listing of the company in March 2008. (wikipedia.org)
  • The company was delisted after the take over was completed in October 2011, and it was renamed Transocean Norway Drilling AS - a wholly owned subsidiary of Transocean. (wikipedia.org)
  • Egyptian Drilling Company (EDC) is a 50/50 joint venture between Maersk Drilling and the Egyptian General Petroleum Corporation. (wikipedia.org)
  • He had started his company in 1931 when he mated a drilling rig to a truck and a power take-off assembly. (wikipedia.org)
  • The company had converted to an income trust in 2002 did business under the name Trinidad Energy Services Income Trust, it has since reverted to a corporation and reverted to the name Trinidad Drilling. (wikipedia.org)
  • In December 2007, a Bainbridge, Ohio, home exploded (http://www.dnr.state.oh.us/Portals/11/bainbridge/report.pdf) after a natural gas company improperly drilled and fractured a nearby well. (ewg.org)
  • 19th
  • Until internal combustion engines were developed in the late 19th century, the main method for drilling rock was muscle power of man or animal. (wikipedia.org)
  • Natasha Odendaal 19th January 2018 ASX-listed BlackEarth is preparing to implement its drilling programme after listing on the Australian bourse on Friday following a $5.45-million initial public offering (IPO) raising. (miningweekly.com)
  • Oslo Stock Ex
  • In December 2005, Aker drilling went public and was listed on the Oslo Stock Exchange. (wikipedia.org)
  • In February 2011, Aker drilling was relisted in the Oslo stock exchange under the ticker - 'AKD', three years after being taken off the exchange. (wikipedia.org)
  • metres
  • The semi-submersible platform is able to operate at water depths up to 1,030 metres (3,380 ft) and can drill down to 6,000 metres (20,000 ft) under the seabed. (wikipedia.org)
  • operates
  • Trinidad Drilling Ltd. is a corporation headquartered in Calgary, Alberta that operates in the drilling and well servicing sectors of the North American oil and gas industry. (wikipedia.org)
  • phases
  • The planning phases involved in drilling an oil or gas well typically involve estimating the value of sought reserves, estimating the costs to access reserves, acquiring property by a mineral lease, a geological survey, a well bore plan, and a layout of the type of equipment required to reach the depth of the well. (wikipedia.org)
  • Earth's
  • Funded by the National Science Foundation and the International Continental Drilling Program, the Lake Junín Project is aimed at furthering our understanding of the Earth's natural climate cycles over the past one million years. (union.edu)
  • natural gas
  • Natural gas drilling enjoys many exemptions from the federal Clean Air, Clean Water and Safe Drinking Water acts, as well as hazardous waste laws. (ewg.org)
  • reports on natural gas and oil drilling, with a focus on the environmental and human health effects. (democracynow.org)
  • annular
  • The various types of fluid generally fall into a few broad categories: Air: Compressed air is pumped either down the bore hole's annular space or down the drill string itself. (wikipedia.org)
  • equipment
  • Specifying equipment, material and ratings and grades to be used in the drilling process. (wikipedia.org)
  • Well drilling can be done either manually or mechanically and the nature of required equipment varies from extremely simple and cheap to very sophisticated. (wikipedia.org)
  • In certain circumstances, magnetic fields could be used, but would be influenced by metalwork used inside wellbores, as well as the metalwork used in drilling equipment. (wikipedia.org)
  • These high performance paper drills can run in-line with other finishing equipment. (wikipedia.org)
  • Because SGS specializes in environmental drilling services we have the latest equipment and techniques to meet your project's needs. (sgs.com)
  • Norwegian
  • Aker drilling was established in 2005, as part of the Aker Group controlled by the Norwegian billionaire Kjell Inge Røkke. (wikipedia.org)
  • SeaDrill is controlled by the Norwegian shipping magnate John Fredriksen who has announced that he wished SeaDrill to acquire Eastern Drilling. (wikipedia.org)
  • aims
  • Because each drilling project has a unique environment, we rigorously assess your project and formulate a bespoke approach to meet your aims. (sgs.com)
  • services
  • The purchase of Underbalanced Drilling Systems Ltd. adds to Precision's underbalanced drilling services. (wikipedia.org)
  • We have a large and multi-disciplined, high-quality environmental drilling services team, providing a range of state-of-the-art techniques to suit your environment. (sgs.com)
  • commonly
  • Cutting fluid is commonly used to cool the drill bit, increase tool life, increase speeds and feeds, increase the surface finish, and aid in ejecting chips. (wikipedia.org)
  • operation
  • This class of data drilling operation is formally (and loosely) known by different names, including crosstab query, pivot table, data pilot, selective hierarchy, intertwingularity and others. (wikipedia.org)
  • made
  • citation needed] Friction drilling uses a conical bit made of very heat-resistant material such as cemented carbide. (wikipedia.org)
  • In 2007, it was taken off the exchange to avoid a takeover by billionaire John Fredriksen's Seadrill, which made a voluntary offer for all outstanding shares in Aker Drilling. (wikipedia.org)
  • On 15 August 2010, Transocean made a US$1.43 billion takeover bid for Aker Drilling. (wikipedia.org)
  • water
  • Drilling is moving out of remote areas to within range of millions of people in cities and towns - and their water supplies. (ewg.org)
  • machines
  • In ancient China, deep well drilling machines were in the forefront of brine well production by the 1st century BC. (wikipedia.org)
  • For this purpose paper drilling machines are used. (wikipedia.org)
  • Paper drilling machines is the generic term for manual, motorised and fully automated paper drills. (wikipedia.org)
  • The phrase paper drill is used as well for paper drilling machines as for the tools used for paper drilling. (wikipedia.org)
  • Paper drilling machines can be equipped with a different number of spindles which are each built into one paper drill head. (wikipedia.org)
  • Paper drilling machines are used in trade binderies, commercial print shops with finishing department, in-house print shops and copy shops. (wikipedia.org)
  • Depending on the volumes these companies operate many different types of paper drilling machines - from simple one- and two-spindle hand operated table top paper drills to standard motorised four- spindle paper drilling machines and fully automated, integrated paper drilling systems. (wikipedia.org)
  • surface
  • The tendency to walk is also preempted in various other ways, which include: Establishing a centering mark or feature before drilling, such as by: Casting, molding, or forging a mark into the workpiece Center punching Spot drilling (i.e., center drilling) Spot facing, which is machining a certain area on a casting or forging to establish an accurately located face on an otherwise rough surface. (wikipedia.org)
  • Constraining the position of the drill bit using a drill jig with drill bushings Surface finish produced by drilling may range from 32 to 500 microinches. (wikipedia.org)
  • usually
  • The clay is usually a combination of native clays that are suspended in the fluid while drilling, or specific types of clay that are processed and sold as additives for the WBM system. (wikipedia.org)
  • Usually 2 to 3 stabilizers are fitted into the BHA, including one just above the drill bit (near-bit stabilizer) and one or two among the drill collars (string stabilizers). (wikipedia.org)
  • copper
  • Ongoing drilling has intersected new high-sulphidation epithermal (HSE) copper/gold mineralisation, similar to that found at the. (miningweekly.com)