Drilling methods

Автор: А.В. Епихинассистент

кафедры бурения скважин,О.С. Ульянова

доцент кафедры ИЯПР

Томск - 2015

Drilling methods

cable tool drilling (ударно-канатное бурение)

auger drilling(шнековое бурение)

Drilling methods

Conventional Drilling (бурение обычного типа)

Conventional wells are drilled vertically from the surface straight down to the pay zone.  This is the traditional and still common type of drilling.

Drilling methodsrotary drilling (роторное или вращательное бурение)

Drilling methodsoffshore drilling

(морское бурение)

Drilling methodsHorizontal Drilling (горизонтальное бурение )Using technologies such as bottom driven bits, drillers

are able to execute a sharp turn and drill horizontally along a thin pay zone.  In a related procedure, developed in this area, two horizontal well bores are drilled one above the other, about 3 meters apart.  One application for this is SAGD (Steam Assisted Gravity Drainage) where steam is injected into the higher of these horizontal holes and the heat precipitates oil down into the lower hole, increasing production of heavy oil.  Drilling these holes requires an experienced crew, precision techniques and advanced technology.

Drilling methodshorizontal well (горизонтальная скважина)

Drilling methodsКустовое бурение (multiple drilling)

Drilling methods Slant Drilling (наклонное бурение) Drilling at an angle from perpendicular (commonly

30° to 45°).  This approach minimizes surface environmental disturbance.  For example, oil reserves under a lake can be tapped by a slant hole drilled from on shore.  More commonly in this area; four, six, even eight slant wells are drilled from one "pad" (i.e. well lease site).  This allows the oil reserves under a large land area to be tapped by only one well site.  Thus, production of valuable oil reserves is effectively harmonized with conserving the environment.

Drilling methods

Directional Drilling (наклонно-направленное бурение)

Drilling has advanced from slant and horizontal drilling to drilling that can change direction and depth several times in one well bore.  A schematic of these drill bores (often several from the same drill pad, resembles the roots of a plant.  This type of drilling is uniquely suited to pay zones in the Lloydminster area which are often distributed like prairie sloughs across the underground landscape.  Directional drilling is also being applied in other parts of the world now such as Venezuela and where there is a special need to limit environmental impact on the surface. 

Drilling methods

horizontal directional drilling (HDD) Профиль скважины (well profile)•План скважины (well’s plan)•Длина скважины(well length)•Глубина скважины(well depth)•Отход (horizontal displacement)•Зенитный угол(inclination)•Азимутальный угол (azimuth alangle)•Интенсивность искривления(inclination intensity)•Радиус кривизны(radius ofcurvature)•Кривизна скважины(hole curvature)•Апсидальная плоскость(apsidal plane)

Drilling methods

Профиль скважин (well profile)Двухинтервальный профиль Трехинтервальный профильЧетырехинтервальный профильПятиинтервальный профильНестандартные профили

Drilling methods

horizontal directional drilling (HDD) (метод горизонтально-направленного бурения)

pадиальное бурение(radial drilling). двуствольное бурение(duplex well drilling, simultaneous drilling). многоствольное бурение(multiholedrilling).

Drilling methodsРадиальное бурение (radial drilling).Двуствольное бурение (duplex well drilling, simultaneous drilling). Многоствольное бурение (multihole drilling).

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