Patent ID: 7377322

Claim:
A method for cementing production tubing in a predefined lateral of a multilateral borehole, comprising: running production tubing into said predefined lateral, said production tubing having a distal end, an anchor and a packer spaced from the distal end, and a work string removably attached to the packer, said running of the production tubing being continued until said packer and said anchor are advanced beyond a junction of lateral boreholes; setting said anchor and securing said production tubing in a fixed relationship with said predefined lateral; injecting a fluid cement material through said production tubing, out of at least one opening therein and around an annular space around the production tubing defined between a external surface of the production tubing and an internal surface of said predefined lateral, said injecting being continued for a period of time sufficient to substantially fill said annular space around the production tubing from said distal end approximately to said packer with said fluid cement material; and subsequently setting said packer and forming a fluid seal between said production tubing and said internal surface of said predefined lateral.