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FRACTURE PRESSURE [14 records]

Record 1 2021-07-14

English

Subject field(s)
  • Oil Drilling
CONT

When sufficient hydraulic pressure is applied through the wellbore against a particular formation, the formation rock fractures along the plane perpendicular to the direction of the least principal stress. A horizontal fracture will be created if fracture pressure is greater than overburden pressure; a vertical fracture will occur if overburden pressure is greater.

French

Domaine(s)
  • Forage des puits de pétrole

Spanish

Save record 1

Record 2 2021-07-14

English

Subject field(s)
  • Oil Drilling
DEF

The pressure per unit depth necessary to fracture the formation.

French

Domaine(s)
  • Forage des puits de pétrole
DEF

Gradient de pression qui, appliqué aux formations de subsurface, cause des fractures physiques aux formations géologiques.

Spanish

Save record 2

Record 3 2021-07-14

English

Subject field(s)
  • Oil Drilling
DEF

The process by which multiple fractures are created along the horizontal section of the wellbore in a series of consecutive operations.

CONT

Using mechanical means or fluid pressure, each segment of the horizontal wellbore is isolated and fractured individually. Frac fluid is pumped from the surface at a predetermined and constantly monitored rate to the "toe, "the farthest isolated segment in the horizontal section. When the fracture is created, proppant-laden fluid is pumped into the fracture to keep it open. Once complete, the process is repeated for each segment in the wellbore, working back towards the "heel. "

OBS

The terms "fraccing" and "fracing," short for "fracturing," are pronounced "fracking."

Key term(s)
  • horizontal multi-stage hydraulic fracturing

French

Domaine(s)
  • Forage des puits de pétrole
DEF

Processus qui consiste à créer de multiples fractures le long du segment horizontal d'un puits de forage dans une série d'opérations consécutives.

Spanish

Save record 3

Record 4 2021-07-14

English

Subject field(s)
  • Oil Drilling
CONT

During the hydraulic fracturing process, some of the fracturing fluid may leave the fracture and enter the targeted formation adjacent to the created fracture(i. e. untreated formation). This phenomenon is known as fluid leak-off. The fluid flows into the micropore or pore spaces of the formation or into existing natural fractures in the formation or into small fractures opened and propagated into the formation by the pressure in the induced fracture.

French

Domaine(s)
  • Forage des puits de pétrole
DEF

Phénomène se produisant lorsque le liquide de fracturation hydraulique s'écoule de la fracture principale et s'infiltre dans une autre partie de la formation ou dans un autre réseau de fractures.

Spanish

Save record 4

Record 5 2021-07-14

English

Subject field(s)
  • Oil Drilling
CONT

When sufficient hydraulic pressure is applied through the wellbore against a particular formation, the formation rock fractures along the plane perpendicular to the direction of the least principal stress. A horizontal fracture will be created if fracture pressure is greater than overburden pressure; a vertical fracture will occur if overburden pressure is greater.

French

Domaine(s)
  • Forage des puits de pétrole

Spanish

Save record 5

Record 6 2021-07-14

English

Subject field(s)
  • Oil Drilling
CONT

A hydraulic fracture is formed by pumping the fracturing fluid into the wellbore at a rate sufficient to increase the pressure downhole to a value in excess of the fracture gradient of the formation rock. The pressure causes the formation to crack, allowing the fracturing fluid to enter and extend the crack farther into the formation. To keep this fracture open after the injection stops, a solid proppant, commonly a sieved round sand, is added to the fracture fluid. The propped hydraulic fracture then becomes a high permeability conduit through which the formation fluids can flow to the well.

French

Domaine(s)
  • Forage des puits de pétrole
OBS

La fracture hydraulique se forme dans une formation rocheuse après que celle-ci ait subi une opération de fracturation hydraulique.

Spanish

Save record 6

Record 7 2012-02-24

English

Subject field(s)
  • Bones and Joints
  • Diagnostic Procedures (Medicine)
DEF

A triangular depression on the back of the wrist produced by extending the fingers and thumb, on which orthopedic surgeons exert digital pressure in order to test suspected fracture of the scaphoid bone.

French

Domaine(s)
  • Os et articulations
  • Méthodes diagnostiques (Médecine)
DEF

Dépression elliptique des téguments de la partie postéro-latérale du poignet.

Spanish

Save record 7

Record 8 2011-09-20

English

Subject field(s)
  • Geology
  • Oil Drilling
CONT

The fluid flows into the micropore or pore spaces of the formation or into existing natural fractures in the formation or into small fractures opened and propagated into the formation by the pressure in the induced fracture.

French

Domaine(s)
  • Géologie
  • Forage des puits de pétrole
CONT

Le principe de la fracturation hydraulique consiste à envoyer dans le puits un mélange d’eau et de sable sous forte pression, afin de provoquer des fractures dans la roche à travers le tubage du puits, préalablement perforé sur certains segments pour assurer la communication avec la formation géologique, ou d'agrandir les fractures naturelles de la roche. Les grains de sable qui s’insèrent dans les fractures ainsi créées les empêchent de se refermer ultérieurement quand la pression se relâche.

Spanish

Save record 8

Record 9 2010-07-22

English

Subject field(s)
  • Radiography (Medicine)
  • Musculoskeletal System
DEF

A fracture of the orbital floor caused by a sudden increase of intraorbital pressure due to traumatic force. This fracture occurs most frequently without an associated fracture of the orbital rim.

French

Domaine(s)
  • Radiographie (Médecine)
  • Appareil locomoteur (Médecine)
DEF

Fracture du plancher de l'orbite, sans atteinte du cadre orbitaire, causée par l'hypertension intraorbitaire lors d'un traumatisme direct sur le globe.

Spanish

Save record 9

Record 10 2004-08-04

English

Subject field(s)
  • Oil and Natural Gas Extraction
  • Boring and Drilling (Mines)
  • Geophysics
DEF

The pressure at which a formation will break down, or fracture.

CONT

... once a vertical fracture has been formed, the pressure exerted by one wall of a crack against the other(on reclosure) will be less than half the fracturing pressure...

OBS

fracture: A crack or crevice in a formation, either natural or induced.

French

Domaine(s)
  • Extraction du pétrole et du gaz naturel
  • Sondage et forage miniers
  • Géophysique
CONT

Les procédés SCV [stimulation cyclique par la vapeur] nécessitent le forage de puits horizontaux plutôt que de puits verticaux ou inclinés ainsi que l'injection de vapeur à une pression supérieure à la pression de fracturation de la formation. La pression plus élevée permettra à la vapeur de pénétrer plus avant dans les sables bitumineux, réduisant ainsi le nombre de puits et de cycles nécessaires et augmentant la production.

Spanish

Save record 10

Record 11 2001-03-15

English

Subject field(s)
  • Oil Drilling
  • Oil Production
DEF

Pertaining to the amount of pressure needed at the wellhead to rupture the formation in a fracture treatment or squeeze job.

PHR

Formation breakdown pressure.

French

Domaine(s)
  • Forage des puits de pétrole
  • Production pétrolière
PHR

Pression de fracturation.

Spanish

Save record 11

Record 12 2000-05-30

English

Subject field(s)
  • Oil and Natural Gas Extraction
  • Engineering
CONT

... another possible way of creating permeability in hot dry rocks is «impact fracturing». This method... [may be described in its principle. ] A bore, cased except near the lower extremity, is surmounted by a hydraulic accumulator, filled with water and pressurized by means of a pump until the accumulator weight is lifted. The lifting pressure should be perhaps about 90% of the estimated hydro-fracturing pressure. A dynamic blow would then be struck upon the top of the water column by means of some device resembling a pile-driver, so that shock waves would travel to the base of the bore and be reflected up and down at attenuating intensity. Very high instantaneous pressures would be generated which would fracture the rock, and it is expected that the steepness of the pressure rise would be such as to resemble explosive action, so that the «star» formation... would be produced.

French

Domaine(s)
  • Extraction du pétrole et du gaz naturel
  • Ingénierie

Spanish

Save record 12

Record 13 1996-03-21

English

Subject field(s)
  • Vertebrae and Bone Marrow
DEF

A condition in which pressure is exerted on the spinal cord, as by tumor, spinal fracture, etc.

CONT

Out of 137 cases concerning the spine and spine cord, the authors demonstrate that MRI is nowadays fully integrated in urgency investigations. In all cord compression suspicions and in spine trauma investigations, its place is found.

French

Domaine(s)
  • Vertèbres et moelle
CONT

A partir de 137 observations portant sur le rachis et la moelle, les auteurs montrent que l'intégration de l'IRM dans les examens d'urgence est aujourd'hui une réalité. Elle trouve sa place dans toutes les suspicions de compressions médullaires mais également dans l'exploration des traumatismes rachidiens.

Spanish

Save record 13

Record 14 1980-09-01

English

Subject field(s)
  • Long-Distance Pipelines
OBS

Critical through-wall crack size may be defined as the maximum axial length of a sharp crack that the pipe can tolerate at the operating pressure without a propagating fracture starting.

French

Domaine(s)
  • Canalisations à grande distance

Spanish

Save record 14

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