1、LEVEL 3 MULTILATERAL SYSTEM 4LEVEL 4 MULTILATERAL SYSTEM 6LEVEL 5 MULTILATERAL SYSTEM 8Level 6 The Formation Junction Multilateral System 9Level 6 DOWNHOLE SPLITTER SYSTEM 10Level 6 Deepset Splitter SYSTEM 12Test Facility 14Baker Oil Tools is the industry leader in providing multilateral completions
2、 for all levels of functionality. The case histories listed below are not a complete list of every BOT completion, but rather a sample of the different kinds of multilateral installations performed to date. Level DefinitionsLevel 2 Multilateral System About TAML CategorizationTAML （Technology Advanc
3、ement of Multilaterals） is a group of operators with multilateral experience who developed a categorization system for multilateral wells based on the amount and type of support provided at the junction. This categorization makes it easier for operators to recognize and compare the functionality and
4、 risk-to-reward evaluations of one multilateral completion design to another. Recognized TAML levels increase in complexity from Level 1 （simple open hole mainbore） through Level 6 as shown.Level DefinitionsA Baker Oil Tools Level 2 multilateral system delivers a junction which incorporates a cased
5、and cemented mainbore with an open-hole lateral that can be completed barefoot or with a slotted liner or screen. If a permanent orientation and depth control point is desired for future re-entry work, a permanent multilateral packer can be used with a WindowMaster?Whipstock a casing exit system. Ho
6、wever, if full-bore access through the mainbore is the major concern, a retrievable multilateral packer can be used below the WindowMaster Whipstock. A Level 2 multilateral with a permanent orientation point is constructed by setting a permanent multilateral packer （MLZXP?Liner Hanger/Packer or ML T
7、orqueMaster?Packer） in the cased mainbore directly below the desired kickoff depth. Following a multilateral packer orientation run, the surface-oriented WindowMaster milling assembly is run and anchored into the multilateral packer. Window milling and lateral drilling are performed and the WindowMa
8、ster whipstock assembly is then retrieved. If production isolation is required during the well life, a Baker Oil Tools sliding sleeve is run in conjunction with a tieback string and a Baker Oil Tools production packer that is set above the casing exit point. When open, the sleeve allows for commingl
9、ed production of both zones to the surface. However, the sleeve can be closed to shut off flow from the lateral formation. The sliding sleeve completion option DOES NOT allow for re-entry into the upper lateral. If re-entry into the upper lateral is desired, a Baker Oil Tools Lateral Entry Nipple （L
10、EN? can be used in place of the sliding sleeve. This LEN tool provides for thru-tubing re-entry into the lateral bore when required. Production isolation of the upper lateral is still possible through the use of an isolation sleeve that can be placed across the lateral bore opening of the LEN tool.
11、A retrievable packer Level 2 system is installed in the same manner as the permanent packer option; however, the multilateral packer （retrievable TorqueMaster） and WindowMaster are run in tandem, oriented simultaneously using MWD and the retrievable TorqueMaster, then set with annular pressure. Afte
12、r drilling the lateral, the WindowMaster and retrievable TorqueMaster assembly are retrieved, leaving full-gauge access into the mainbore. LEVEL 3 MULTILATERAL SYSTEMA Baker Oil Tools Level 3 multilateral system delivers a mechanically supported junction in which the mainbore is cased and cemented w
13、ith the lateral open. The lateral is completed with a lateral liner anchored, but not cemented, to the mainbore. There are essentially three basic configurations for providing a Level 3 multilateral junction.All three configurations involve first setting a multilateral packer （MLZXP Liner Hanger/Pac
14、ker or TorqueMaster Packer） in the cased mainbore at a depth to allow for the desired kickoff point. Following a multilateral packer orientation run, the surface-oriented WindowMaster milling assembly is run in and anchored into the multilateral packer. Window milling and lateral drilling are then p
15、erformed, and the WindowMaster?Whipstock assembly is retrieved.In the first Level 3 multilateral option, a flow-through diverter is run then anchored into the multilateral packer. A slotted liner hanging from a liner hanger/production packer is then run into the lateral, and the packer is set in the
16、 mainbore. The slotted liner and flow-through diverter allow for commingled production. In the second Level 3 multilateral option, the flow-through diverter is eliminated. Instead, a bent joint assembly is used with surface manipulation of the drillpipe in order to divert the slotted liner into the
17、lateral. As in the previous configuration, the liner hanger/production packer is set, supporting the lateral to the mainbore. Neither option allows access to the mainbore formation, due to the presence of the slotted liner across the junction.A third option, using the Baker Oil Tools HOOK?Hanger sys
18、tem, allows for selective re-entry into the lateral and the mainbore. The HOOK Hanger is a casing joint with a pre-cut main-bore window, internal re-entry orientation profile, and a hook below the pre-milled window that is designed to catch and hang the lateral liner in the bottom of the casing exit
19、 window. Re-entry is accomplished using either a lateral or main-bore re-entry module as a bottomhole assembly on tubing or coiled tubing.LEVEL 4 MULTILATERAL SYSTEMA Baker Oil Tools Level 4 multilateral system delivers a junction in which the mainbore and lateral are cased and cemented, providing m
20、aximum mechanical support of the junction area. Baker Oil Tools offers two basic configurations for providing a Level 4 multilateral junction, the Root SystemSM and the HOOK Hanger System.The Root System junction is created by first deploying a multilateral packer （MLZXP Liner Hanger/Packer or ML To
21、rqueMaster Packer） into the mainbore casing at the desired junction depth. Following a multilateral packer orientation trip, an ML Whipstock?milling assembly is run and anchored into the multilateral packer. The main-bore exit window is then created using the ML Whipstock System mills, and the later
22、al well is drilled. Next, a liner is placed in the lateral wellbore leaving an overlap section in the mainbore. The lateral liner is then cemented in place. Once the cement has cured, perforating, stimulation, and lateral completion operations are performed.After these procedures are complete, a was
23、hover assembly is run to cut and retrieve the liner overlap in the main-bore casing. During this process, the ML Whipstock is also retrieved with the washover assembly passing around the exterior of the whipstock and engaging into a retrieval sub located in the assembly below the whipstock. The fina
24、l multilateral junction yields a full main-bore ID at the junction area. With the inclusion of additional Baker completion equipment such as sliding sleeves or Baker Oil Tools Lateral Entry Nipple （LEN?, production isolation and re-entry capability into either wellbore is also possible with this Lev
25、el 4 multilateral system.The HOOK Hanger System allows for selective re-entry into either the lateral or the mainbore. This system utilizes a casing joint with pre-cut window, internal re-entry orientation profile and a hook below the pre-cut window designed to catch and a lateral liner in the casin
26、g exit window. After a multilateral packer （MLZXP Liner Hanger/Packer or ML TorqueMaster） is set below the desired casing exit depths, a multilateral packer orientation trip is made, and the WindowMaster milling system is run and anchored in the orientation packer. Once window milling and lateral dr
27、illing are complete, the WindowMaster whipstock assembly is retrieved.The HOOK Hanger and lateral liner assembly are then run in and diverted into the lateral wellbore using a bent joint until the hook on the HOOK Hanger engages the casing exit window. Once the HOOK Hanger is hung off, the assembly
28、is cemented in place, resulting in a Level 4 junction offering full mechanical support in addition to positive thru-tubing re-entry into either lateral.LEVEL 5 MULTILATERAL SYSTEMA Baker Oil Tools Level 5 multilateral system delivers both a mechanically supported and hydraulically isolated multilate
29、ral completion with full re-entry and production isolation capability into either bore. Options are available that allow for either independent production of each producing zone to surface or commingled production of both zones. Level 5 multilaterals offer the best solution for multilateral wells in
30、 weak, incompetent environments susceptible to wellbore collapse.Baker Oil Tools ROOT SYSTEM is the basic system foundation for creating a Level 5 multilateral completion. A Baker Oil Tools MLZXP Liner Hanger Packer or ML TorqueMaster Packer is run in conjunction with Baker Oil Tool ML Whipstock Sys
31、tem to create the casing exit window. After drilling the lateral, the lateral casing is run and cemented in place with the top of the liner extending back through the casing exit and into the mainbore portion of the well. The lateral bore can then be perforated, stimulated, and completed as required
32、.After completing the lateral, a washover assembly tool is used to wash over and retrieve not only the portion of the lateral liner extending into the mainbore, but also the original ML whipstock and anchor assembly. At this point, a Root System Level 4 has been created offering full mechanical integrity across the junction. Additional completion equipment is installed to create the hydraulic integrity required for a Level 5
