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US 9,957,787 B2Granted
Method of enhanced oil recovery from lateral wellbores
OwnerLloyd Murray Dallasinventor
Life of this patent
Estimating the term…
Abstract
Enhanced oil recovery is practiced in long lateral wellbores by drilling at least one of a sidetrack lateral wellbore end a branch lateral wellbore from the main lateral wellbore. After production of the sidetrack lateral wellbore or the branch lateral wellbore, EOR flood fluid is pumped info the at least one of the sidetrack lateral wellbore and the branch lateral wellbore and recovered hydrocarbons and EOR flood fluid are produced from the main lateral wellbore, or vice versa.
Claims9
A method of enhanced oil recovery (EOR) from a cased and cemented main lateral wellbore, comprising:
- setting a packer in the main lateral wellbore;
- drilling at least one sidetrack lateral wellbore spaced from the main lateral wellbore, casing and cementing the, sidetrack lateral wellbore;
- perforating and stimulating a first section of the sidetrack lateral wellbore, the first section having a length of less than a total length of the sidetrack lateral wellbore, and producing hydrocarbons from the first section;
- removing the packer from the main lateral wellbore;
- running production tubing and a packer into the main lateral wellbore and setting the packer in the main lateral wellbore;
- injecting EOR flood fluid down an annulus of a vertical section of the main lateral wellbore and into the sidetrack lateral wellbore;
- and
- producing hydrocarbons comingled with EOR flood fluid up the production tubing in the main lateral wellbore while injecting the EOR flood fluid;
- pulling the packer and production tubing from the main lateral wellbore;
- setting a packer to seal off the first section of the sidetrack lateral wellbore;
- and
- perforating and stimulating a next section of the sidetrack lateral wellbore and producing hydrocarbons from the next section of the sidetrack lateral wellbore.
9 more elements
A method of enhanced oil recovery (EOR) from a cased and cemented main lateral wellbore, comprising:
- perforating, stimulating and flowing back a first section of the main lateral wellbore, the first section having a length less than a total length of the main lateral wellbore, and producing hydrocarbons from the first section of the main lateral wellbore;
- drilling at least one branch lateral wellbore in an unperforated region of the main lateral wellbore adjacent the perforations of the first section of the main lateral well bore;
- casing and cementing the at least one branch lateral wellbore;
- perforating, stimulating and flowing back the at least one branch lateral wellbore and producing hydrocarbons from the at least, one branch lateral wellbore;
- running production tubing and a packer into the main lateral wellbore and setting the packer to isolate the main lateral wellbore from the at least one branch lateral wellbore;
- and
- injecting EOR flood fluid down an annulus of a vertical section of the main lateral wellbore, an unperforated section of the main lateral wellbore and into the at least one branch lateral wellbore, and producing hydrocarbons comingled with EOR flood fluid up the production tubing;
- setting a packer in the main lateral wellbore to isolate the main lateral wellbore from the at least one branch lateral wellbore;
- perforating, stimulating and flowing back a next section of the main lateral wellbore, the next section haying a length less than a total length of the main lateral wellbore, and producing hydrocarbons from the next section of the main lateral wellbore;
- drilling at least one branch lateral wellbore in an unperforated region of the main lateral wellbore adjacent the perforations of the next section of the main lateral well bore, casing and cementing the at least one branch lateral wellbore;
- perforating, stimulating and flowing back the at least one branch lateral wellbore and producing hydrocarbons from the at least one branch lateral wellbore;
- running production tubing and a packer into the main lateral wellbore and setting the packer to isolate the main lateral wellbore from the at least one branch lateral wellbore;
- and
- injecting EOR flood fluid down an annulus of a vertical section of the main lateral wellbore and into the at least one branch lateral wellbore, and producing hydrocarbon comingled with EOR flood fluid up the production tubing in the main lateral wellbore while injecting the EOR flood fluid.
11 more elements
Dependencies are inferred from the claim text.