Nov 6 (Reuters) - Horizon Oil Ltd HZN.AX
* Enters into deal with Todd Maari Limited to buy its 16% interest in Maari & Manaia Fields for us$17.6 million
* Upon completion, acquisition will increase co's net daily production from about 4,100 bopd currently to 5,500 bopd
* Acquisition to increase net operating cash flow from China & New Zealand, expects to average US$60 million to US$70 million over next 5 years