Patent ID: 8286708

Claim:
A method of installing a lateral well, the lateral well deviating from a primary well at a predetermined radial location, the method comprising the steps of: (a) installing a downhole assembly in the primary well so as to engage a lower assembly disposed in the primary well, the downhole assembly comprising (i) a first part of an orienting device comprising one of an orienting profile and an orienting key; (ii) a packer located downhole of the orienting device; (iii) an isolation device located downhole of the packer and forming a seal that prevents fluid flow therepast and into the downhole assembly; (iv) a running tool comprising a measuring device, a circulating device, and a second part of the orienting device comprising the other of the orienting profile and the orienting key, wherein operation of the circulating device and isolation device causes the packer to set; (b) operating the measuring device to identify the rotational orientation of the packer; (c) operating the circulation device to set the packer; (d) separating the first and second parts of the orienting device by removing the running tool in an uphole direction away from the downhole assembly; (e) providing a second running tool, the second running tool comprising a milling device and a milling whipstock connected to a third part of the orienting device comprising the other of the orienting profile and the orienting key; (f) inserting the second running tool into the primary well, wherein as the second running tool approaches the downhole assembly, the third part of the orienting device engages the first part of the orienting device to rotate the milling whipstock into a desired rotational position wherein a profiled surface on the milling whipstock faces the predetermined radial location; (g) inserting a retrieving tool into the primary well and using the retrieving tool to remove the milling whipstock from the primary well; (h) providing a third running tool, the third running tool comprising a production deflector having a through-bore for downhole fluid production therethrough, the production deflector coupled to a fourth part of the orienting device comprising the other of the orienting profile and the orienting key; and (i) inserting the third running tool into the primary well, wherein as the third running tool is moved towards the downhole assembly, the fourth part of the orienting device engages the first part of the orienting device to rotate the third running tool into a rotational position wherein a profiled surface of the production deflector faces the window.