bayou,
The great majority of the expat pilots working in Nigeria are touring either 7/5 (Bristow) or 6/6 (CHC) or 12/4 or 5 months/ 1 month (Caverton). Occasionally wives get out for a visit, but not too often. Bristow has a few positions with Shell which are on married basis, but for CHC and Caverton there are almost none.
With the present security situation in Nigeria, if you want your family secure leave them at home