As prolong of exploitation time on Daqing oilfield and implementation of secondary and thrice dense exploration schemes, the more complicated the underground conditions in the oilfield become, the more channeling wells are found.

Comparing data of outside casing channeling and no channeling, under condition of pressure material having no means of deriving exactness consecutive, formation temperature data plays a decisive role.

The experiments cover two types of cement-lacking-channel models,one for circular channels of different angular width,and the other for channels with gradually decreasing void channel.

Mainly discussed are cement bond logging responses to channels of flow media (e.

SBT is one of the latest and the most effective tools for checking cementing quality and its channeling.

This paper proposes isotope channeling detection log suitable to this oilfield in terms of process design and isotope carrier selection.

Surface pre-orienting drilling technology is employed for preventing wellbore from collision and channeling in CDXA Cluster Wells.

Boron-injected neutron lifetime logging thchnology for evaluating cement channeling;