drilling innovations and technologies have become some of chevron’s greatest devices ter unlocking resources
innovation gives chevron an edge
The visionary inventor Buckminster Fuller once said, &ldquo,I just invent, then wait until man comes around to needing what I&rsquo,ve invented.&rdquo, Some existing technologies, such spil horizontal drilling, &ldquo,wait around&rdquo, until a fresh generation of innovators recognize their intrinsic value and adapt it for current needs. After being very first used ter the 1920s, horizontal drilling became one of Chevron&rsquo,s major implements ter the 1980s and today, it&rsquo,s being used more innovatively and yielding outstanding results. From the waters of the North Sea to shale formations te the United States, horizontal drilling helps us recover up to Ten times the resources from existing fields.
Horizontal drilling helps us reach resources that would otherwise be too uneconomic or complicated to pursue. The U.K.&rsquo,s Captain Field languished after its discovery ter 1977 because its shallow reservoir consisted of liberate, unconsolidated sand that would have required about 300 wells to produce. Eventually, advances te horizontal drilling provided the technology that enabled us to unlock that oil. Ter 1995, wij needed just seven extended horizontal wells te an environment that wasgoed like manipulating a chunk of string from a mile away ter the dark. But it worked, spil wij produced oil from a horizontal section more than Five,000 feet long &mdash, a North Sea record at the time.
Te 1997, 20 years after its discovery, Captain achieved very first oil, thanks to developments te horizontal drilling and downhole pumps ter the well bores. And it has bot producing everzwijn since with help from further horizontal drilling, which we’ve brought back to increase production by accessing untapped reserves. Our practice with horizontal drilling te Captain is paying off ter other locations, such spil Brazil’s Frade Field.
see how horizontal drilling works
Horizontal drilling efficiently recovers more resources with a smaller environmental footprint than drilling numerous vertical wells.
“Arch It like Beckham” wasgoed a movie about a British football strak who could &ldquo,arch&rdquo, or curve a kicked ball around a row of defenders. Horizontal drilling is a bit like that. Take the case of our Marcellus Shale unconventional oil and gas assets ter Pennsylvania.
Horizontal drilling gives us greater access to the reservoir by using a equipment to drill down thousands of feet into the targeted production zone. The drill then probes thousands of feet horizontally through the shale. This treatment efficiently recovers more natural gas with a smaller environmental footprint than drilling numerous vertical wells. It&rsquo,s particularly effective because the Marcellus terrain is fairly hilly, limiting the plane areas on which to place a drilling equipment. So laterals &mdash, or horizontal sections &mdash, can thrust further, with greater success.
And we’re getting more efficient at using the technology, cutting safe drilling time ter half and doubling our productivity. Used te combination with another technology — hydraulic fracturing — horizontal drilling is enhancing production flow rates te the Marcellus Shale and other unconventional oil and gas holdings. Horizontal drilling also helps us vormgeving our wells with control systems to protect groundwater through the life of the well.
Chevron combines two proven technologies &ndash, horizontal drilling and hydraulic fracturing &ndash, to securely produce natural gas from shale.
Natural gas from shale is being developed securely and responsibly today using technologies that have bot proven overheen decades of use.
Horizontal drilling became commercially viable ter the 1980s. Hydraulic fracturing has bot used since the 1940s ter more than Two million wells around world. Te the United States, 90 procent of oil and gas wells go through hydraulic fracturing to enhance production flow rates.
Chevron is pursuing advancements ter technology and applying industry best practices via the total development life cycle to efficiently produce shale gas while protecting the environment.
Shale rock formations are located up to Three miles below the earth’s surface. Producing natural gas from shale is made possible by extended-reach horizontal drilling, to access the resource, and hydraulic fracturing where water under pressure is used to fracture the rock, releasing the trapped gas. Once finished, thesis wells are expected to produce for 40 to 50 years.
our shale gas development and operations
See how we’ve developed fresh shale gas technology and how that technology has improved natural gas production.
Horizontal drilling is helping to enhance production and recovery from old oil fields. At the century-old Kern Sea Field te California&rsquo,s San Joaquin Valley, horizontal wells drilled with steerable instruments permit us to effectively access remaining oil, achieving higher production rates and greater recovery than vertical wells. Directional control is maintained within taut tolerances during drilling operations and logging implements permit us to monitor and react ter real time when wij&rsquo,re deviating from the target formation. The result: Wij&rsquo,ve significantly diminished Kern Sea&rsquo,s decline, due to the higher production rates from horizontal wells.
Elsewhere ter the San Joaquin Valley, horizontal drilling is achieving similar results. A good example is the San Ardo Field, where horizontal drilling is enabling us to increase production by improving ontwatering from the heated portions of a much thicker reservoir.
Chevron&rsquo,s commitment to safe and responsible energy development shapes everything wij do and every decision wij make. Our drilling activities are designed to protect our workforce, the communities where wij operate, and natural resources, including water, land and air. Our use of horizontal drilling enables us to gather natural gas from a large underground area with minimal surface interference, limiting our environmental footprint. With a single padachtige, for example, wij can produce from an area of about one square mile. And the wells for our shale operations are designed and drilled with control systems to protect groundwater via the life of the well.
Similarly, our Subsea Mudlift Drilling (SMD) has the potential to make our safe and efficient deepwater drilling operations even safer. Since mud isn’t needed te the riser to control the well, it restores the riser margin, re-establishing an even greater level of safety than ter the single-gradient systems presently te use. SMD permits drillers to more quickly detect and appropriately react to downhole pressure switches, enhancing the safety and efficiency of deepwater drilling operations.
Wise use of our technology will remain instrumental ter the success of our base business and major capital projects, and on our long-term purpose of achieving industry-leading results for decades to come. Advances ter drilling technology will proceed to take us into places that were previously inaccessible or uneconomic to drill.