Hydraulic fracturing

is fractures formation in gas-, oil-, water-saturated and other rocks under the pressure of the fed fluid. The operation is performed in a well in order to increase extraction rates by means of the multi-hole drainage system made as a result of extensive fracture network creation. The execution of formation hydraulic fracturing in gas wells became possible with the introduction of pump devices with the pumping rate of 3 to 4 cubic meters per minute and 100 MPa output pressure.
When the process fluid is being pumped into the well with a high flow rate, a high pressure is produced at the downhole. If it exceeds the horizontal constituent of the mine pressure, a vertical fracture is formed. In case it exceeds the mine pressure, a horizontal fracture is formed.
Gelled water and hydrocarbon based liquids (sometimes called slickwater) are widely used as fracturing fluids. Along with the process fluid a propping agent (sand or solid proppant with particles of 0.5 to 1.5 millimeters in diameter) is propped into the fracture to prevent it from healing. When gelled liquids with reduced leakage into formation and high sand-bearing capacity are used, downhole pressure can be increased with a rather low pumping rate while the proppant is transferred along the whole length of the fracture.

Glossary of Oil and Gas. 2013.

Look at other dictionaries:

  • Hydraulic fracturing — is a method used to create fractures that extend from a borehole into rock formations, which are typically maintained by a proppant. The method is informally called fracing or hydrofrac. The technique is used to increase or restore the rate which …   Wikipedia

  • Hydraulic Fracturing — refers to the procedure of creating fractures in rocks and rock formations by injecting a mixture of sand and water into the cracks to force underground to open further. The larger fissures allow more oil and gas to flow out of the formation and… …   Investment dictionary

  • Hydraulic fracturing —   Fracturing of rock at depth with fluid pressure. Hydraulic fracturing at depth may be accomplished by pumping water into a well at very high pressures. Under natural conditions, vapor pressure may rise high enough to cause fracturing in a… …   Energy terms

  • Hydraulic Fracturing — Schiefergasbohrung im Pinedale Anticline Hydraulic Fracturing (engl.: to fracture = aufbrechen, aufreißen; auch „Fracking“[1], „Hydrofracking“, „Fraccing“[2], „Frac ing“ [3] oder „Frac Jobs“ genannt …   Deutsch Wikipedia

  • hydraulic fracturing — noun A technique in which a mixture of water and sand is forced down an oil well (or similar) in order to create fractures in the oil bearing rock and thus release more oil. Syn: fracing, fracking, hydrofracking …   Wiktionary

  • hydraulic fracturing —    The formation of artificial fractures in rock systems around a well by high pressure fluid injections [16] …   Lexicon of Cave and Karst Terminology

  • hydraulic fracturing — /haɪˌdrɒlɪk ˈfræktʃərɪŋ/ (say huy.drolik frakchuhring) noun (in oil and gas mining) a process by which fractures are made in rock by the application under pressure of chemically treated water mixed with sand to natural or man made openings in… …   Australian English dictionary

  • hydraulic fracturing — …   Useful english dictionary

  • Fracturing Responsibility and Awareness of Chemicals Act — (parfois surnommé loi FRAC) (USBill no 111 et 1215, respectivement pour la chambre et le Sénat) [1],[2] est le nom d’un projet de loi qui, aux États Unis, viserait à imposer aux représentants de l’Industrie du pétrole et du gaz de divulguer… …   Wikipédia en Français

  • Hydraulisches Aufbrechen der Schicht — Hydraulic fracturing – ist die Erzeugung von Rissen in den mit Gas, Erdöl und Wasser gesättigten Gesteinsfeldern und sonstigen Gesteinen durch das Einpressen von Flüssigkeit unter hohem Druck. Dieser Vorgang wird im Bohrloch durchgeführt, um die… …   Glossar von Öl und Gas

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.