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Title: Limited entry, multiple fracturing from deviated wellbores

Abstract

This patent describes a limited entry method for inducing simultaneously multiple vertical fractures in a deviated wellbore penetrating a subterranean formation. It comprises: determining a horizontal distance the deviated wellbore must travel to obtain the most effective and efficient recovery of resources from the formation which formation is not required to exhibit a predetermined minimum pressure increase; drilling the deviated wellbore through the formation at an angle of deviation sufficient to achieve the horizontal distance and at an angle of incidence to a preferred fracture orientation sufficient to obtain the most effective and efficient recovery of the resources; casing the deviated wellbore; ascertaining the number and size of holes to be made in the wellbore casing after deciding a fracture treatment fluid to be used, the fluid's pumping rate, and the perforation pressure drop necessary to divert the fluid through all holes at a rate sufficient to simultaneously create multiple vertical fractures in the formation; perforating the wellbore to create holes therein of the ascertained number and size sufficient to create the fractures when flowing a treating fluid therethrough at an ascertained pumping rate; and placing a pressure on the treating fluid in an amount and at a pumping ratemore » sufficient to create simultaneously multiple vertical fractures in the formation through the holes.« less

Inventors:
Publication Date:
OSTI Identifier:
5404977
Patent Number(s):
US 4867241
Application Number:
PPN: US 7201650A
Assignee:
Mobil Oil Corp., New York, NY
Resource Type:
Patent
Resource Relation:
Patent File Date: 1 Jun 1988
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; NATURAL GAS WELLS; HYDRAULIC FRACTURING; OIL WELLS; ENHANCED RECOVERY; FRACTURING FLUIDS; PERFORATION; PETROLEUM; WELL STIMULATION; COMMINUTION; ENERGY SOURCES; FLUIDS; FOSSIL FUELS; FRACTURING; FUELS; RECOVERY; STIMULATION; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing

Citation Formats

Strubhar, M K. Limited entry, multiple fracturing from deviated wellbores. United States: N. p., 1989. Web.
Strubhar, M K. Limited entry, multiple fracturing from deviated wellbores. United States.
Strubhar, M K. 1989. "Limited entry, multiple fracturing from deviated wellbores". United States.
@article{osti_5404977,
title = {Limited entry, multiple fracturing from deviated wellbores},
author = {Strubhar, M K},
abstractNote = {This patent describes a limited entry method for inducing simultaneously multiple vertical fractures in a deviated wellbore penetrating a subterranean formation. It comprises: determining a horizontal distance the deviated wellbore must travel to obtain the most effective and efficient recovery of resources from the formation which formation is not required to exhibit a predetermined minimum pressure increase; drilling the deviated wellbore through the formation at an angle of deviation sufficient to achieve the horizontal distance and at an angle of incidence to a preferred fracture orientation sufficient to obtain the most effective and efficient recovery of the resources; casing the deviated wellbore; ascertaining the number and size of holes to be made in the wellbore casing after deciding a fracture treatment fluid to be used, the fluid's pumping rate, and the perforation pressure drop necessary to divert the fluid through all holes at a rate sufficient to simultaneously create multiple vertical fractures in the formation; perforating the wellbore to create holes therein of the ascertained number and size sufficient to create the fractures when flowing a treating fluid therethrough at an ascertained pumping rate; and placing a pressure on the treating fluid in an amount and at a pumping rate sufficient to create simultaneously multiple vertical fractures in the formation through the holes.},
doi = {},
url = {https://www.osti.gov/biblio/5404977}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 19 00:00:00 EDT 1989},
month = {Tue Sep 19 00:00:00 EDT 1989}
}